Illinois State Water Survey Illinois State Climatologist

Hot September So Far, But Relief Is in Sight

Illinois and the Midwest have been running hot so far in September.  The statewide average temperature for September 1-19, 2018, in Illinois was 73.5 degrees and 4.7 degrees above normal. Days at or above 90 degrees have been quite common this September, especially in central and southern Illinois where we saw 8 to 12 days […]

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Wet Start to September Thanks to Gordon

Illinois experienced a wet start to September, thanks in part to Tropical Storm Gordon.  The statewide average rainfall through yesterday morning was 3.55 inches.  That is above the 3.24 normal rainfall for the entire month of September.  The highest month-to-date rainfall total was 10.15 inches and came from Clay City (east of St. Louis).

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Both August and Summer Were Warmer, Wetter Than Normal for Illinois

August: the statewide average temperature for Illinois in August was 74.9 degrees, 1.3 degrees above normal.  The statewide average rainfall was 5.25  inches, 1.66 inches above normal and the 12th wettest August on record. The warmest daily high temperature was 97 degrees reported at Chicago Botanical Gardens (8/5), Chicago O’Hare (8/4), Jerseyville (8/7), and Pittsfield […]

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Battle of the Winter Forecasts

What the Almanacs Say Recently, both the Farmer’s and Old Farmer’s Almanacs released their winter forecasts (below) and what they say for Illinois is quite different.  The Farmer’s Almanac predicts a “Biting Cold, Snowy” winter while the Old Farmer’s Almanac predicts a “Warm, wet” winter for Illinois. The Farmer’s Almanac states that it “bases its […]

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