Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

August Precipitation Highlights:

August was very dry for all of central and most of southeast IL. Monthly deficits of 2-3" were common for most of the area north of I-70, with totals closer to normal farther south. Several reporting sites recorded less than one inch of rain. The most significant weather event of the month was on the afternoon of the 10th, when widespread damaging winds affected central Illinois.

August Temperature Highlights:

Temperatures were near to slightly below normal across the area in August. Little in the way of significant heat developed during the month, with only a handful of days reaching highs in the 90s.

Climate Statistics:

Site	Precipitation	Departure from Normal	Average Temperature	Departure from Normal
Charleston	2.45"	-0.48"	73.4	-1.2
Danville	2.13"	-1.35"	72.4	-1.1
Decatur	0.94"	-2.83"	73.5	-1.6
Effingham	1.75"	-1.26"	N/A	N/A
Flora	4.54"	-1.40"	74.1	-1.0
Galesburg	0.62"	-3.35"	73.1	+0.4
Havana	0.51"	-3.25"	N/A	N/A
Jacksonville	1.05"	-2.37"	71.9	-1.1
Lincoln	1.44"	-2.48"	71.3	-1.7
Normal	1.20"	-2.60"	71.8	-0.7
Olney	2.47"	-0.73"	73.0	-2.2
Paris	1.20"	-2.71"	70.7	-3.1
Peoria	0.59"	-2.65"	73.8	0.0
Springfield	1.63"	-1.61"	73.0	-1.2
Tuscola	1.36"	-1.90"	72.1	-1.6
Urbana	1.36"	-2.57"	73.0	-0.4

The following links are the monthly climate summaries for area cities. Only the summaries for Peoria, Springfield, and Lincoln are considered "official", meaning they are the station of record for their respective locations. The other summaries are "supplemental", meaning another location in the area is the official climate station for the city.

Peoria -- Peoria International Airport
Springfield -- Abraham Lincoln Capital Airport
Lincoln -- National Weather Service Office
Champaign -- University of Illinois-Willard Airport
Decatur -- Decatur Airport
Lawrenceville -- Lawrenceville-Vincennes International Airport
Mattoon -- Coles County Memorial Airport

Climate data for other cities is available at http://w2.weather.gov/climate/xmacis.php?wfo=ilx

September Look Ahead:

Official outlooks from NOAA's Climate Predication center, show below normal temperatures favored (left image), and no clear trend on rainfall (right image).

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Summer Season Overview

Conditions were dry for most of central Illinois this summer. 3-month deficits of 2-5" were common, with much of they dryness occurring in August. However, farther southeast, above normal rainfall was reported across east central and southeast Illinois. Average temperatures over the 3-month period were near to around 1 degree above normal.

Summer Season: Precipitation, Temperature, and Departure from Normal Maps

Links below are the seasonal climate summaries for area cities. Only the summaries for Peoria, Springfield and Lincoln are considered "official", meaning they are the station of record for their respective locations. The other summaries are "supplemental", meaning another location in the area is the official climate station for that city.

Peoria -- Peoria International Airport
Springfield -- Abraham Lincoln Capital Airport
Lincoln -- Lincoln NWS office
Champaign -- University of Illinois - Willard Airport
Decatur -- Decatur Airport
Lawrenceville -- Lawrenceville-Vincennes International Airport
Mattoon -- Coles County Airport

Climate data for other area cities is available at http://www.nws.noaa.gov/climate/xmacis.php?wfo=ilx

ILX RSS Feed

Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

August & Summer Season Climate Summary