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A Wet and Wild January Finally Brings Winter to Illinois

The preliminary statewide average January temperature was 25.7 degrees, 1.0 degree above the 1991–2020 average and tied for the 57th coldest on record going back to 1895. The preliminary statewide ...

2023 was Much Warmer and Drier than Normal

Illinois was both warmer and drier than the 1991–2020 normal in 2023. The statewide average annual temperature was 54.8 degrees, 2.2 degrees above normal and 5th warmest on record statewide ...

Very Mild December in Illinois

The preliminary statewide average December temperature was 39.2 degrees, 7.6 degrees above the 1991–2020 average and the 3rd warmest on record going back to 1895. The preliminary statewide average total ...

November Puts an End to a Warmer and Drier Fall

The preliminary statewide average November temperature was 42.3 degrees, 0.1 degree above the 1991–2020 average and tied for the 46th warmest on record going back to 1895. The preliminary statewide ...

New USDA Plant Hardiness Zones Map

The USDA released their new Plant Hardiness Zone map, which shows significant changes in Illinois’ hardiness zones, reflecting the impact of human-caused climate change. The newest Illinois maps is available ...