Areas of rain and thunderstorms are forecast Monday across the central and eastern states. Some mixed rain and snow is possible in the high Sierra Mountains. Heavy to excessive rain may bring flooding in the central Appalachians. Read More >
| Preliminary data based on the Real-Time Mesoscale Analysis (RTMA)  |
Observed data reported by NWS, FAA and cooperative weather observers
925 AM CDT Sun Sep 20 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 70 63
Aurora/Sugar Grove Arpt 69 63
Barrington 68 62
Batavia 70 64
Chicago Midway Arpt 72 63
Chicago O'Hare Arpt 70 63
Coal City 4NNW 74 65
DeKalb Municipal Arpt 68 62
Elgin 69 63
Elizabeth 68 62
Freeport 68 61
Freeport/Albertus Arpt 69 63
Gladstone L&D 18 74 65
Greater Kankakee Arpt 74 65
Illinois City L&D 16 73 57
Joliet Rgl Arpt 73 65
Kewanee 73 65
Lansing Municipal Arpt 71 63
Marseilles 72 64
Moline/Quad Cities Arpt 73 66
Morris 75 66
New Boston L&D 17 80 68
Ottawa 71 63
Park Forest 71 63
Peru/IL Valley Rgl Arpt 73 64
Rochelle Municipal Arpt 69 63
Rockford Arpt 68 62
Romeoville/NWS Chicago 71 63
Savanna/Tri-Township Arpt 69 64
Schaumburg Rgl Arpt 70 63
Sterling/Rock Falls Arpt 69 64
Stockton 68 62
Waukegan Rgl Arpt 67 61
West Chicago/DuPage Arpt 69 63
Wheeling/Chicago Exec Arpt 71 63
...CENTRAL ILLINOIS...
Aledo 77 66
Avon 77 66
Bloomington/Cntrl IL Rgl Arpt 79 69
Champaign/Willard Arpt 83 67
Coles County Arpt 92 70
Decatur Arpt 86 70
Edgar County Arpt 84 68
Galesburg Municipal Arpt 76 67
Jacksonville Municipal Arpt 89 69
Knoxville 76 67
La Harpe 80 67
Lacon/Marshall Co Arpt 75 67
Lincoln NWS 84 68
Macomb Municipal Arpt 83 68
Minonk 78 66
Normal 4NE 80 70
Ogden 80 68
Pana 95 72
Paris 84 70
Peoria Intl Arpt 78 69
Pittsfield/Penstone Arpt 92 72
Pontiac Municipal Arpt 77 68
Quincy L&D 21 90 73
Quincy Rgl Arpt 87 70
Rantoul Aviation Center 80 69
Shelbyville Dam 94 70
Sidell 4N 83 70
Springfield/Capital Arpt 85 72
Tuscola 85 70
White Hall 1 E 92 71
Windsor 93 70
...SOUTHERN ILLINOIS...
Alton/Mel Price L&D 95 73
Anna 96 66
Cahokia/Parks Arpt 97 70
Crawford County Arpt 93 67
Effingham Co Arpt 93 69
Fairfield 98 71
Fairfield Municipal Arpt 98 68
Grand Chain Dam 98 72
Harrisburg Arpt 99 66
Kaskaskia L&D 99 70
Lawrenceville/Vincennes Arpt 97 70
Millstadt 95 71
Mt Carmel Municipal Arpt 101 70
Olney/Noble Arpt 100 69
Salem 99 71
Salem/Leckrone Arpt 100 71
Smithland Dam 97 69
Sparta Community Arpt 98 69
$$
|
|
Preliminary data based on the Real-Time Mesoscale Analysis
|
Observed data from NWS, FAA, and cooperative weather observers
925 AM CDT Sun Sep 20 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 70 63
Aurora/Sugar Grove Arpt 69 63
Barrington 68 62
Batavia 70 64
Chicago Midway Arpt 72 63
Chicago O'Hare Arpt 70 63
Coal City 4NNW 74 65
DeKalb Municipal Arpt 68 62
Elgin 69 63
Elizabeth 68 62
Freeport 68 61
Freeport/Albertus Arpt 69 63
Gladstone L&D 18 74 65
Greater Kankakee Arpt 74 65
Illinois City L&D 16 73 57
Joliet Rgl Arpt 73 65
Kewanee 73 65
Lansing Municipal Arpt 71 63
Marseilles 72 64
Moline/Quad Cities Arpt 73 66
Morris 75 66
New Boston L&D 17 80 68
Ottawa 71 63
Park Forest 71 63
Peru/IL Valley Rgl Arpt 73 64
Rochelle Municipal Arpt 69 63
Rockford Arpt 68 62
Romeoville/NWS Chicago 71 63
Savanna/Tri-Township Arpt 69 64
Schaumburg Rgl Arpt 70 63
Sterling/Rock Falls Arpt 69 64
Stockton 68 62
Waukegan Rgl Arpt 67 61
West Chicago/DuPage Arpt 69 63
Wheeling/Chicago Exec Arpt 71 63
...CENTRAL ILLINOIS...
Aledo 77 66
Avon 77 66
Bloomington/Cntrl IL Rgl Arpt 79 69
Champaign/Willard Arpt 83 67
Coles County Arpt 92 70
Decatur Arpt 86 70
Edgar County Arpt 84 68
Galesburg Municipal Arpt 76 67
Jacksonville Municipal Arpt 89 69
Knoxville 76 67
La Harpe 80 67
Lacon/Marshall Co Arpt 75 67
Lincoln NWS 84 68
Macomb Municipal Arpt 83 68
Minonk 78 66
Normal 4NE 80 70
Ogden 80 68
Pana 95 72
Paris 84 70
Peoria Intl Arpt 78 69
Pittsfield/Penstone Arpt 92 72
Pontiac Municipal Arpt 77 68
Quincy L&D 21 90 73
Quincy Rgl Arpt 87 70
Rantoul Aviation Center 80 69
Shelbyville Dam 94 70
Sidell 4N 83 70
Springfield/Capital Arpt 85 72
Tuscola 85 70
White Hall 1 E 92 71
Windsor 93 70
...SOUTHERN ILLINOIS...
Alton/Mel Price L&D 95 73
Anna 96 66
Cahokia/Parks Arpt 97 70
Crawford County Arpt 93 67
Effingham Co Arpt 93 69
Fairfield 98 71
Fairfield Municipal Arpt 98 68
Grand Chain Dam 98 72
Harrisburg Arpt 99 66
Kaskaskia L&D 99 70
Lawrenceville/Vincennes Arpt 97 70
Millstadt 95 71
Mt Carmel Municipal Arpt 101 70
Olney/Noble Arpt 100 69
Salem 99 71
Salem/Leckrone Arpt 100 71
Smithland Dam 97 69
Sparta Community Arpt 98 69
$$
|
|
Preliminary data based on the Real-Time Mesoscale Analysis
CoCoRaHS Observations: |
Observations from NWS, FAA and cooperative weather observers
920 AM CDT Sun Sep 20 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 2.78 0.0 0
Aurora/Sugar Grove Arpt 2.61
Barrington 1.38 0.0 0
Batavia 1.67 0.0 0
Bourbonnais 1.40 0.0 0
Chicago Midway Arpt 1.40
Chicago O'Hare Arpt 1.30
Coal City 4NNW 1.48 0.0 0
Elgin 1.15 0.0 0
Elgin 1.32 0.0 0
Elizabeth 1.91 0.0 0
Freeport 1.61
Gladstone L&D 18 0.65 0.0 0
Illinois City L&D 16 2.04
Joliet 2N 1.70
Kewanee 1.50 0.0 0
Marseilles 1.85
Mendota 2.90
Moline/Quad Cities Arpt 2.82
Morris 1.52 0.0 0
New Boston L&D 17 1.70
Ottawa 1.10
Park Forest 1.47 0.0 0
Peotone 1.40 0.0 0
Romeoville/NWS Chicago 1.65 0.0 0
Steward 2.96 0.0 0
Stockton 0.68 0.0 0
Streator 0.37 0.0 0
Watseka 0.12 0.0 0
Waukegan Rgl Arpt 1.53
Westmont 1.65
Wheeling/Chicago Exec Arpt 1.11
Willow Springs 2.00
Woodstock 5NW 2.32
...CENTRAL ILLINOIS...
Aledo 2.75 0.0 0
Athens 4SW T
Avon 0.0 0
Bloomington/Cntrl IL Rgl Arpt 0.00
Buffalo 0.22 0.0 0
Champaign/Willard Arpt 0.35
Coles County Arpt 0.00
Decatur Arpt 0.43
Knoxville 0.54 0.0 0
Lake Springfield 0.08
Lincoln NWS T 0.0 0
Mattoon 0.00 0.0 0
Minonk 0.20
Morton 0.01 0.0 0
Mount Pulaski 0.11 0.0 0
Normal 4NE 0.15 0.0 0
Ogden 0.68 0.0 0
Pana 0.00 0.0 0
Paris 0.11 0.0 0
Peoria 5NW 0.13 0.0 0
Peoria Intl Arpt 0.03
Philo 0.30 0.0 0
Quincy L&D 21 0.00 0.0 0
Quincy Rgl Arpt 0.00
Rantoul 0.48
Roanoke 0.09 0.0 0
Shelbyville Dam 0.00 0.0 0
Sidell 4N 0.25
Springfield/Capital Arpt 0.01
Tuscola 0.10
White Hall 1 E 0.00
Windsor 0.00 0.0 0
Yates City 0.08
...SOUTHERN ILLINOIS...
Alton/Mel Price L&D 0.00
Anna 0.00
Cahokia/Parks Arpt 0.00
Edwardsville 2 W 0.00
Fairfield 0.00 0.0 0
Grand Chain Dam 0.00
Highland 0.00 0.0 0
Kaskaskia L&D 0.00
Lawrenceville/Vincennes Arpt 0.00
Millstadt 0.00
Salem 0.00 0.0 0
Smithland Dam 0.00
$$
|
| Preliminary data based on analysis from the NWS National Operational Hydrologic Remote Sensing Center (NOHRSC)
CoCoRaHS Observations: |
Observations from NWS, FAA and cooperative weather observers
920 AM CDT Sun Sep 20 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 2.78 0.0 0
Aurora/Sugar Grove Arpt 2.61
Barrington 1.38 0.0 0
Batavia 1.67 0.0 0
Bourbonnais 1.40 0.0 0
Chicago Midway Arpt 1.40
Chicago O'Hare Arpt 1.30
Coal City 4NNW 1.48 0.0 0
Elgin 1.15 0.0 0
Elgin 1.32 0.0 0
Elizabeth 1.91 0.0 0
Freeport 1.61
Gladstone L&D 18 0.65 0.0 0
Illinois City L&D 16 2.04
Joliet 2N 1.70
Kewanee 1.50 0.0 0
Marseilles 1.85
Mendota 2.90
Moline/Quad Cities Arpt 2.82
Morris 1.52 0.0 0
New Boston L&D 17 1.70
Ottawa 1.10
Park Forest 1.47 0.0 0
Peotone 1.40 0.0 0
Romeoville/NWS Chicago 1.65 0.0 0
Steward 2.96 0.0 0
Stockton 0.68 0.0 0
Streator 0.37 0.0 0
Watseka 0.12 0.0 0
Waukegan Rgl Arpt 1.53
Westmont 1.65
Wheeling/Chicago Exec Arpt 1.11
Willow Springs 2.00
Woodstock 5NW 2.32
...CENTRAL ILLINOIS...
Aledo 2.75 0.0 0
Athens 4SW T
Avon 0.0 0
Bloomington/Cntrl IL Rgl Arpt 0.00
Buffalo 0.22 0.0 0
Champaign/Willard Arpt 0.35
Coles County Arpt 0.00
Decatur Arpt 0.43
Knoxville 0.54 0.0 0
Lake Springfield 0.08
Lincoln NWS T 0.0 0
Mattoon 0.00 0.0 0
Minonk 0.20
Morton 0.01 0.0 0
Mount Pulaski 0.11 0.0 0
Normal 4NE 0.15 0.0 0
Ogden 0.68 0.0 0
Pana 0.00 0.0 0
Paris 0.11 0.0 0
Peoria 5NW 0.13 0.0 0
Peoria Intl Arpt 0.03
Philo 0.30 0.0 0
Quincy L&D 21 0.00 0.0 0
Quincy Rgl Arpt 0.00
Rantoul 0.48
Roanoke 0.09 0.0 0
Shelbyville Dam 0.00 0.0 0
Sidell 4N 0.25
Springfield/Capital Arpt 0.01
Tuscola 0.10
White Hall 1 E 0.00
Windsor 0.00 0.0 0
Yates City 0.08
...SOUTHERN ILLINOIS...
Alton/Mel Price L&D 0.00
Anna 0.00
Cahokia/Parks Arpt 0.00
Edwardsville 2 W 0.00
Fairfield 0.00 0.0 0
Grand Chain Dam 0.00
Highland 0.00 0.0 0
Kaskaskia L&D 0.00
Lawrenceville/Vincennes Arpt 0.00
Millstadt 0.00
Salem 0.00 0.0 0
Smithland Dam 0.00
$$
|
| Preliminary data based on analysis from the NWS National Operational Hydrologic Remote Sensing Center (NOHRSC)
CoCoRaHS Observations: |
Observations from NWS, FAA and cooperative weather observers
920 AM CDT Sun Sep 20 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 2.78 0.0 0
Aurora/Sugar Grove Arpt 2.61
Barrington 1.38 0.0 0
Batavia 1.67 0.0 0
Bourbonnais 1.40 0.0 0
Chicago Midway Arpt 1.40
Chicago O'Hare Arpt 1.30
Coal City 4NNW 1.48 0.0 0
Elgin 1.15 0.0 0
Elgin 1.32 0.0 0
Elizabeth 1.91 0.0 0
Freeport 1.61
Gladstone L&D 18 0.65 0.0 0
Illinois City L&D 16 2.04
Joliet 2N 1.70
Kewanee 1.50 0.0 0
Marseilles 1.85
Mendota 2.90
Moline/Quad Cities Arpt 2.82
Morris 1.52 0.0 0
New Boston L&D 17 1.70
Ottawa 1.10
Park Forest 1.47 0.0 0
Peotone 1.40 0.0 0
Romeoville/NWS Chicago 1.65 0.0 0
Steward 2.96 0.0 0
Stockton 0.68 0.0 0
Streator 0.37 0.0 0
Watseka 0.12 0.0 0
Waukegan Rgl Arpt 1.53
Westmont 1.65
Wheeling/Chicago Exec Arpt 1.11
Willow Springs 2.00
Woodstock 5NW 2.32
...CENTRAL ILLINOIS...
Aledo 2.75 0.0 0
Athens 4SW T
Avon 0.0 0
Bloomington/Cntrl IL Rgl Arpt 0.00
Buffalo 0.22 0.0 0
Champaign/Willard Arpt 0.35
Coles County Arpt 0.00
Decatur Arpt 0.43
Knoxville 0.54 0.0 0
Lake Springfield 0.08
Lincoln NWS T 0.0 0
Mattoon 0.00 0.0 0
Minonk 0.20
Morton 0.01 0.0 0
Mount Pulaski 0.11 0.0 0
Normal 4NE 0.15 0.0 0
Ogden 0.68 0.0 0
Pana 0.00 0.0 0
Paris 0.11 0.0 0
Peoria 5NW 0.13 0.0 0
Peoria Intl Arpt 0.03
Philo 0.30 0.0 0
Quincy L&D 21 0.00 0.0 0
Quincy Rgl Arpt 0.00
Rantoul 0.48
Roanoke 0.09 0.0 0
Shelbyville Dam 0.00 0.0 0
Sidell 4N 0.25
Springfield/Capital Arpt 0.01
Tuscola 0.10
White Hall 1 E 0.00
Windsor 0.00 0.0 0
Yates City 0.08
...SOUTHERN ILLINOIS...
Alton/Mel Price L&D 0.00
Anna 0.00
Cahokia/Parks Arpt 0.00
Edwardsville 2 W 0.00
Fairfield 0.00 0.0 0
Grand Chain Dam 0.00
Highland 0.00 0.0 0
Kaskaskia L&D 0.00
Lawrenceville/Vincennes Arpt 0.00
Millstadt 0.00
Salem 0.00 0.0 0
Smithland Dam 0.00
$$
|
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