National Weather Service United States Department of Commerce

NOTE:  Climate information is PRELIMINARY DATA.
CERTIFIED climate data is available from the
National Centers for Environmental Information, or from the
Midwestern Regional Climate Center.

 

Preliminary data based on the Real-Time Mesoscale Analysis
(RTMA)



24-hour high temperatures
Observed data reported by NWS, FAA and cooperative weather observers
 
1211 PM CST Sun Jan 18 2026

Automated and Cooperative Observer Reports
Values represent high and low temperatures
for the 24-hour period ending around 7 am.

          Location               High   Low  

...NORTHERN ILLINOIS...
Aurora/Sugar Grove Arpt           21     6   
Batavia                           18     7   
Chicago Midway Arpt               26     9   
Chicago Midway COOP               15     9   
Chicago O'Hare Arpt               25     8   
Coal City 4NNW                    20     10  
DeKalb Municipal Arpt             20     3   
DeKalb Northern IL Univ           16     2   
Elgin                             17     3   
Elizabeth                         14     0   
Freeport                          15     2   
Freeport/Albertus Arpt            17     3   
Greater Kankakee Arpt             28     10  
Illinois City L&D 16              12     -1  
Joliet Rgl Arpt                   27     11  
Kewanee                           16     6   
Lansing Municipal Arpt            26     9   
Marseilles                        19     10  
Moline/Quad Cities Arpt           19     5   
Morris Municipal Arpt             24     9   
Ottawa                            18     7   
Park Forest                       18     8   
Peru/IL Valley Rgl Arpt           19     9   
Romeoville/NWS Chicago            23     7   
Savanna/Tri-Township Arpt         16     3   
Schaumburg Rgl Arpt               23     7   
Sterling/Rock Falls Arpt          18     4   
Stockton                          14     -1  
Waukegan Rgl Arpt                 23     8   
West Chicago/DuPage Arpt          22     6   
Wheeling/Chicago Exec Arpt        24     8   

...CENTRAL ILLINOIS...
Aledo                             16     6   
Avon                              16     5   
Bentley                           18     8   
Bloomington/Cntrl IL Rgl Arpt     25     10  
Champaign/Willard Arpt            29     10  
Coles County Arpt                 32     11  
Danville/Vermilion Rgl Arpt       33     11  
Decatur Arpt                      29     12  
Edgar County Arpt                 32     11  
Galesburg Municipal Arpt          18     7   
Galesburg Water Plant             15     6   
Gladstone L&D 18                  24     8   
Jacksonville 2                    19     9   
Jacksonville 2E                   22     11  
Jacksonville Municipal Arpt       25     11  
Knoxville                         16     7   
La Harpe                          15     6   
Lacon/Marshall Co Arpt            23     9   
Lincoln NWS                       27     12  
Macomb Municipal Arpt             22     8   
Minonk                            21         
Normal 4NE                        20     10  
Ogden                             23     10  
Pana                              23     11  
Paris                             21     11  
Peoria Intl Arpt                  24     10  
Pontiac Municipal Arpt            26     10  
Quincy L&D 21                     17     10  
Quincy Rgl Arpt                   20     8   
Rantoul Aviation Center           28     10  
Sidell 4N                         25     14  
Springfield/Capital Arpt          27     12  
Taylorville Municipal Arpt        29     12  
Tuscola                           22     11  
White Hall 1 E                    20     10  
Windsor                           21     10  

...SOUTHERN ILLINOIS...
Alton/Mel Price L&D               30     11  
Anna                              32     11  
Cahokia/Parks Arpt                28     11  
Carbondale/Southern IL Arpt       34     11  
Casey                             25     8   
Crawford County Arpt              36     11  
Effingham Co Arpt                 33     12  
Fairfield                         27     13  
Fairfield Municipal Arpt          34     12  
Grand Chain Dam                   33     13  
Harrisburg Arpt                   35     12  
Kaskaskia L&D                     31     10  
Lawrenceville/Vincennes Arpt      36     4   
Millstadt                         26     8   
Mt Carmel Municipal Arpt          17     13  
Mt Vernon                         28     8   
Olney/Noble Arpt                  35     12  
Salem                             24     11  
Salem/Leckrone Arpt               34     13  
Smithland Dam                     35     12  
Sparta Community Arpt             32     11  

$$


Preliminary data based on the Real-Time Mesoscale Analysis
(RTMA)


 

24-hour low temperatures

Observed data from NWS, FAA, and cooperative weather observers

 

1211 PM CST Sun Jan 18 2026

Automated and Cooperative Observer Reports
Values represent high and low temperatures
for the 24-hour period ending around 7 am.

          Location               High   Low  

...NORTHERN ILLINOIS...
Aurora/Sugar Grove Arpt           21     6   
Batavia                           18     7   
Chicago Midway Arpt               26     9   
Chicago Midway COOP               15     9   
Chicago O'Hare Arpt               25     8   
Coal City 4NNW                    20     10  
DeKalb Municipal Arpt             20     3   
DeKalb Northern IL Univ           16     2   
Elgin                             17     3   
Elizabeth                         14     0   
Freeport                          15     2   
Freeport/Albertus Arpt            17     3   
Greater Kankakee Arpt             28     10  
Illinois City L&D 16              12     -1  
Joliet Rgl Arpt                   27     11  
Kewanee                           16     6   
Lansing Municipal Arpt            26     9   
Marseilles                        19     10  
Moline/Quad Cities Arpt           19     5   
Morris Municipal Arpt             24     9   
Ottawa                            18     7   
Park Forest                       18     8   
Peru/IL Valley Rgl Arpt           19     9   
Romeoville/NWS Chicago            23     7   
Savanna/Tri-Township Arpt         16     3   
Schaumburg Rgl Arpt               23     7   
Sterling/Rock Falls Arpt          18     4   
Stockton                          14     -1  
Waukegan Rgl Arpt                 23     8   
West Chicago/DuPage Arpt          22     6   
Wheeling/Chicago Exec Arpt        24     8   

...CENTRAL ILLINOIS...
Aledo                             16     6   
Avon                              16     5   
Bentley                           18     8   
Bloomington/Cntrl IL Rgl Arpt     25     10  
Champaign/Willard Arpt            29     10  
Coles County Arpt                 32     11  
Danville/Vermilion Rgl Arpt       33     11  
Decatur Arpt                      29     12  
Edgar County Arpt                 32     11  
Galesburg Municipal Arpt          18     7   
Galesburg Water Plant             15     6   
Gladstone L&D 18                  24     8   
Jacksonville 2                    19     9   
Jacksonville 2E                   22     11  
Jacksonville Municipal Arpt       25     11  
Knoxville                         16     7   
La Harpe                          15     6   
Lacon/Marshall Co Arpt            23     9   
Lincoln NWS                       27     12  
Macomb Municipal Arpt             22     8   
Minonk                            21         
Normal 4NE                        20     10  
Ogden                             23     10  
Pana                              23     11  
Paris                             21     11  
Peoria Intl Arpt                  24     10  
Pontiac Municipal Arpt            26     10  
Quincy L&D 21                     17     10  
Quincy Rgl Arpt                   20     8   
Rantoul Aviation Center           28     10  
Sidell 4N                         25     14  
Springfield/Capital Arpt          27     12  
Taylorville Municipal Arpt        29     12  
Tuscola                           22     11  
White Hall 1 E                    20     10  
Windsor                           21     10  

...SOUTHERN ILLINOIS...
Alton/Mel Price L&D               30     11  
Anna                              32     11  
Cahokia/Parks Arpt                28     11  
Carbondale/Southern IL Arpt       34     11  
Casey                             25     8   
Crawford County Arpt              36     11  
Effingham Co Arpt                 33     12  
Fairfield                         27     13  
Fairfield Municipal Arpt          34     12  
Grand Chain Dam                   33     13  
Harrisburg Arpt                   35     12  
Kaskaskia L&D                     31     10  
Lawrenceville/Vincennes Arpt      36     4   
Millstadt                         26     8   
Mt Carmel Municipal Arpt          17     13  
Mt Vernon                         28     8   
Olney/Noble Arpt                  35     12  
Salem                             24     11  
Salem/Leckrone Arpt               34     13  
Smithland Dam                     35     12  
Sparta Community Arpt             32     11  

$$


               

Preliminary data based on the Real-Time Mesoscale Analysis
(RTMA)


 

24-hour precipitation

 

CoCoRaHS Observations:
Enlarge imagego to CoCoRaHS Page

CoCoRaHS Observations

Observations from NWS, FAA and cooperative weather observers

920 AM CST Sun Jan 18 2026

Automated and Cooperative Observer Reports
Values represent precipitation and snowfall
for the 24-hour period ending around 7 am.

          Location               Pcpn   Snow   Depth  

...NORTHERN ILLINOIS...
Aurora/Sugar Grove Arpt          0.00                 
Batavia                          0.01    0.2     T    
Bourbonnais                      0.00    0.0     T    
Chicago Midway Arpt              0.00                 
Chicago O'Hare Arpt              0.00                 
Coal City 4NNW                     T     0.1     T    
DeKalb Northern IL Univ            T     0.4     1    
Earlville 3S                       T      T      0    
Elgin                                    1.4     1    
Elgin                            0.07    1.2     2    
Elizabeth                        0.02    0.4     1    
Freeport                           T     0.2     T    
Genoa                            0.04    1.0     1    
Illinois City L&D 16             0.02                 
Kewanee                            T      T      T    
Marseilles                       0.00                 
Mendota                          0.00                 
Moline/Quad Cities Arpt          0.00                 
Ottawa                           0.00                 
Park Forest                      0.01     T      1    
Peotone                            T      T      T    
Romeoville/NWS Chicago           0.01    0.2     T    
Steward                            T      T      T    
Stockton                         0.03    0.5     1    
Waukegan Rgl Arpt                0.00                 
West Chicago/DuPage Arpt         0.00                 
Westmont                         0.01    0.3     1    
Wheeling/Chicago Exec Arpt       0.00                 

...CENTRAL ILLINOIS...
Aledo                              T      T      T    
Athens 4SW                         T      T      0    
Augusta                            T      T      T    
Avon                               T      T      0    
Bentley                            T      T      T    
Bloomington/Cntrl IL Rgl Arpt    0.00                 
Champaign/Willard Arpt           0.00                 
Cisco                              T      T      T    
Coles County Arpt                0.00                 
Decatur Arpt                     0.00                 
Galesburg Water Plant              T      T      T    
Gladstone L&D 18                 0.00    0.0     0    
Jacksonville 2                     T      T      T    
Knoxville                        0.00    0.0     0    
La Harpe                           T      T      T    
Lake Springfield                 0.00                 
Lincoln NWS                        T      T      T    
Macomb                           0.00    0.0     T    
Mattoon                          0.00    0.0     0    
Medora                             T      T      T    
Minonk                             T                  
Morton                             T      T      0    
Mount Pulaski                      T      T      T    
Moweaqua 2S                      0.00    0.0     T    
Normal 4NE                         T     0.0     0    
Ogden                              T      T      T    
Pana                             0.00    0.0     0    
Paris                            0.00    0.0     0    
Peoria 5NW                         T      T      0    
Peoria Intl Arpt                 0.00                 
Quincy L&D 21                    0.00                 
Quincy Rgl Arpt                  0.00                 
Rantoul                          0.00    0.0     T    
Sherman                          0.00                 
Sidell 4N                        0.00    0.0     0    
Springfield/Capital Arpt         0.00                 
Tuscola                            T      T      0    
White Hall 1 E                   0.00                 
Windsor                          0.00    0.0     0    
Yates City                       0.00                 

...SOUTHERN ILLINOIS...
Alton/Mel Price L&D              0.00                 
Anna                             0.00                 
Beecher City                     0.01    0.1     T    
Cahokia/Parks Arpt               0.00                 
Carbondale/Southern IL Arpt      0.00                 
Clay City 6SSE                   0.05    0.4     T    
Edwardsville 2 W                   T      T      T    
Fairfield                        0.00    0.0     0    
Grand Chain Dam                  0.00                 
Highland                         0.01     T      T    
Hutsonville                        T     0.0     0    
Kaskaskia L&D                    0.00    0.0     0    
Lawrenceville/Vincennes Arpt     0.01                 
Medora                             T      T      T    
Millstadt                        0.00                 
Mt Vernon                        0.01                 
Neoga                            0.00    0.0     T    
Salem                              T     0.0     0    
Smithland Dam                    0.00                 

$$
                 




Preliminary data based on analysis from the NWS
National Operational Hydrologic Remote Sensing Center
(NOHRSC)

 

24-hour snowfall
 

CoCoRaHS Observations:
Enlarge mapgo to CoCoRaHS Page

CoCoRaHS Observations

Observations from NWS, FAA and cooperative weather observers

920 AM CST Sun Jan 18 2026

Automated and Cooperative Observer Reports
Values represent precipitation and snowfall
for the 24-hour period ending around 7 am.

          Location               Pcpn   Snow   Depth  

...NORTHERN ILLINOIS...
Aurora/Sugar Grove Arpt          0.00                 
Batavia                          0.01    0.2     T    
Bourbonnais                      0.00    0.0     T    
Chicago Midway Arpt              0.00                 
Chicago O'Hare Arpt              0.00                 
Coal City 4NNW                     T     0.1     T    
DeKalb Northern IL Univ            T     0.4     1    
Earlville 3S                       T      T      0    
Elgin                                    1.4     1    
Elgin                            0.07    1.2     2    
Elizabeth                        0.02    0.4     1    
Freeport                           T     0.2     T    
Genoa                            0.04    1.0     1    
Illinois City L&D 16             0.02                 
Kewanee                            T      T      T    
Marseilles                       0.00                 
Mendota                          0.00                 
Moline/Quad Cities Arpt          0.00                 
Ottawa                           0.00                 
Park Forest                      0.01     T      1    
Peotone                            T      T      T    
Romeoville/NWS Chicago           0.01    0.2     T    
Steward                            T      T      T    
Stockton                         0.03    0.5     1    
Waukegan Rgl Arpt                0.00                 
West Chicago/DuPage Arpt         0.00                 
Westmont                         0.01    0.3     1    
Wheeling/Chicago Exec Arpt       0.00                 

...CENTRAL ILLINOIS...
Aledo                              T      T      T    
Athens 4SW                         T      T      0    
Augusta                            T      T      T    
Avon                               T      T      0    
Bentley                            T      T      T    
Bloomington/Cntrl IL Rgl Arpt    0.00                 
Champaign/Willard Arpt           0.00                 
Cisco                              T      T      T    
Coles County Arpt                0.00                 
Decatur Arpt                     0.00                 
Galesburg Water Plant              T      T      T    
Gladstone L&D 18                 0.00    0.0     0    
Jacksonville 2                     T      T      T    
Knoxville                        0.00    0.0     0    
La Harpe                           T      T      T    
Lake Springfield                 0.00                 
Lincoln NWS                        T      T      T    
Macomb                           0.00    0.0     T    
Mattoon                          0.00    0.0     0    
Medora                             T      T      T    
Minonk                             T                  
Morton                             T      T      0    
Mount Pulaski                      T      T      T    
Moweaqua 2S                      0.00    0.0     T    
Normal 4NE                         T     0.0     0    
Ogden                              T      T      T    
Pana                             0.00    0.0     0    
Paris                            0.00    0.0     0    
Peoria 5NW                         T      T      0    
Peoria Intl Arpt                 0.00                 
Quincy L&D 21                    0.00                 
Quincy Rgl Arpt                  0.00                 
Rantoul                          0.00    0.0     T    
Sherman                          0.00                 
Sidell 4N                        0.00    0.0     0    
Springfield/Capital Arpt         0.00                 
Tuscola                            T      T      0    
White Hall 1 E                   0.00                 
Windsor                          0.00    0.0     0    
Yates City                       0.00                 

...SOUTHERN ILLINOIS...
Alton/Mel Price L&D              0.00                 
Anna                             0.00                 
Beecher City                     0.01    0.1     T    
Cahokia/Parks Arpt               0.00                 
Carbondale/Southern IL Arpt      0.00                 
Clay City 6SSE                   0.05    0.4     T    
Edwardsville 2 W                   T      T      T    
Fairfield                        0.00    0.0     0    
Grand Chain Dam                  0.00                 
Highland                         0.01     T      T    
Hutsonville                        T     0.0     0    
Kaskaskia L&D                    0.00    0.0     0    
Lawrenceville/Vincennes Arpt     0.01                 
Medora                             T      T      T    
Millstadt                        0.00                 
Mt Vernon                        0.01                 
Neoga                            0.00    0.0     T    
Salem                              T     0.0     0    
Smithland Dam                    0.00                 

$$

Preliminary data based on analysis from the NWS
National Operational Hydrologic Remote Sensing Center
(NOHRSC)

 

24-hour snowfall
 

CoCoRaHS Observations:
Enlarge mapgo to CoCoRaHS Page

CoCoRaHS Observations

Observations from NWS, FAA and cooperative weather observers

920 AM CST Sun Jan 18 2026

Automated and Cooperative Observer Reports
Values represent precipitation and snowfall
for the 24-hour period ending around 7 am.

          Location               Pcpn   Snow   Depth  

...NORTHERN ILLINOIS...
Aurora/Sugar Grove Arpt          0.00                 
Batavia                          0.01    0.2     T    
Bourbonnais                      0.00    0.0     T    
Chicago Midway Arpt              0.00                 
Chicago O'Hare Arpt              0.00                 
Coal City 4NNW                     T     0.1     T    
DeKalb Northern IL Univ            T     0.4     1    
Earlville 3S                       T      T      0    
Elgin                                    1.4     1    
Elgin                            0.07    1.2     2    
Elizabeth                        0.02    0.4     1    
Freeport                           T     0.2     T    
Genoa                            0.04    1.0     1    
Illinois City L&D 16             0.02                 
Kewanee                            T      T      T    
Marseilles                       0.00                 
Mendota                          0.00                 
Moline/Quad Cities Arpt          0.00                 
Ottawa                           0.00                 
Park Forest                      0.01     T      1    
Peotone                            T      T      T    
Romeoville/NWS Chicago           0.01    0.2     T    
Steward                            T      T      T    
Stockton                         0.03    0.5     1    
Waukegan Rgl Arpt                0.00                 
West Chicago/DuPage Arpt         0.00                 
Westmont                         0.01    0.3     1    
Wheeling/Chicago Exec Arpt       0.00                 

...CENTRAL ILLINOIS...
Aledo                              T      T      T    
Athens 4SW                         T      T      0    
Augusta                            T      T      T    
Avon                               T      T      0    
Bentley                            T      T      T    
Bloomington/Cntrl IL Rgl Arpt    0.00                 
Champaign/Willard Arpt           0.00                 
Cisco                              T      T      T    
Coles County Arpt                0.00                 
Decatur Arpt                     0.00                 
Galesburg Water Plant              T      T      T    
Gladstone L&D 18                 0.00    0.0     0    
Jacksonville 2                     T      T      T    
Knoxville                        0.00    0.0     0    
La Harpe                           T      T      T    
Lake Springfield                 0.00                 
Lincoln NWS                        T      T      T    
Macomb                           0.00    0.0     T    
Mattoon                          0.00    0.0     0    
Medora                             T      T      T    
Minonk                             T                  
Morton                             T      T      0    
Mount Pulaski                      T      T      T    
Moweaqua 2S                      0.00    0.0     T    
Normal 4NE                         T     0.0     0    
Ogden                              T      T      T    
Pana                             0.00    0.0     0    
Paris                            0.00    0.0     0    
Peoria 5NW                         T      T      0    
Peoria Intl Arpt                 0.00                 
Quincy L&D 21                    0.00                 
Quincy Rgl Arpt                  0.00                 
Rantoul                          0.00    0.0     T    
Sherman                          0.00                 
Sidell 4N                        0.00    0.0     0    
Springfield/Capital Arpt         0.00                 
Tuscola                            T      T      0    
White Hall 1 E                   0.00                 
Windsor                          0.00    0.0     0    
Yates City                       0.00                 

...SOUTHERN ILLINOIS...
Alton/Mel Price L&D              0.00                 
Anna                             0.00                 
Beecher City                     0.01    0.1     T    
Cahokia/Parks Arpt               0.00                 
Carbondale/Southern IL Arpt      0.00                 
Clay City 6SSE                   0.05    0.4     T    
Edwardsville 2 W                   T      T      T    
Fairfield                        0.00    0.0     0    
Grand Chain Dam                  0.00                 
Highland                         0.01     T      T    
Hutsonville                        T     0.0     0    
Kaskaskia L&D                    0.00    0.0     0    
Lawrenceville/Vincennes Arpt     0.01                 
Medora                             T      T      T    
Millstadt                        0.00                 
Mt Vernon                        0.01                 
Neoga                            0.00    0.0     T    
Salem                              T     0.0     0    
Smithland Dam                    0.00                 

$$
             




 

 

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