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December Brought a Mix of Everything to Kick Off Winter

The preliminary statewide average December temperature was 29.4 degrees, 0.6 degrees below the 1991–2020 average and the 61st coldest on record going back to 1895. The preliminary statewide average total ...
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Big Temperature Swings in November, which Wraps Up an Otherwise Mild Fall

The preliminary statewide average November temperature was 42.3 degrees, 0.6 degrees above the 1991–2020 average and tied for 45th warmest on record going back to 1895. The preliminary statewide average ...
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October Brought Real Fall to Illinois

The preliminary statewide average October temperature was 53.1 degrees, 1.6 degrees below the 1991–2020 average and tied for the 40th coolest on record going back to 1895. The preliminary statewide ...
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Dry and Mild Start to Fall

The preliminary statewide average September temperature was 66.8 degrees, 0.6 degrees above the 1991–2020 average and the 57th warmest on record going back to 1895. The preliminary statewide average total ...
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A Mild August Wraps up Summer in Illinois

The preliminary statewide average August temperature was 73.8 degrees, 0.2 degrees above the 1991–2020 average and the 58th warmest on record going back to 1895. The preliminary statewide average total ...
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