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A Mild November Wraps Up Climatological Fall

The preliminary statewide average November temperature was 40.7 degrees, 1.0 degrees below the 1991–2020 average and 53rd coldest on record going back to 1895. The preliminary statewide average total November ...
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Warm and Wet October

The preliminary statewide average October temperature was 59.7 degrees, 5.1 degrees above the 1991–2020 average and eighth warmest on record going back to 1895. The preliminary statewide average total October ...
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Historical Perspective of the 2021 Drought in Northern Illinois

Drought in northern Illinois this spring and summer caused impacts to agriculture, ecology, and water resources. However, reports from the region suggested the impacts from the ongoing 2021 drought in ...
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Warm and Dry September Extended Summer

The preliminary statewide average September temperature was 69.4 degrees, 2.6 degrees above the 1991–2020 average, and tied for the 21st warmest on record going back to 1895. The preliminary statewide ...
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Hot and Stormy End to Summer

The preliminary statewide average August temperature was 75.6 degrees, 2 degrees above the 1991–2020 average and tied for the 20th warmest on record going back to 1895. The preliminary statewide ...
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