Illinois State Water Survey Illinois State Climatologist

April in Illinois Was Warm, Wet, & Wild

The preliminary statewide average April temperature was 58.6 degrees, 6.4 degrees above the 1991–2020 normal, 7.1 degrees above the 20th Century average, 5.8 degrees above the most recent 30-year average, and the second warmest April on record statewide. The preliminary statewide total April precipitation was 6.37 inches, 2.13 inches above the 1991–2020 normal, 2.65 inches […]

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Spring Begins with a Very Warm and Wet March

The preliminary statewide average March temperature was 47.3 degrees, 5.9 degrees above the 1991–2020 normal, 7.5 degrees above the 20th Century average, 5.3 degrees above the most recent 30-year average, and it tied for 9th warmest March on record going back to 1895. The preliminary statewide average total March precipitation was 4.85 inches, 1.91 inches […]

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Dry and Mild February Ends an Otherwise Cold Winter

The preliminary statewide average February temperature was 33.8 degrees, 2.8 degrees above the 1991–2020 normal, 4.6 degrees above the 20th Century average, 2.8 degrees above the most recent 30-year average, and it tied for 29th warmest February on record going back to 1895. The preliminary statewide average total February precipitation was 0.54 inches, 1.57 inches […]

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2026 Began with a Cold and Dry January

The preliminary statewide average January temperature was 23.5 degrees, 3.2 degrees below the 1991-2020 average and tied for the 41st coldest on record going back to 1895. The preliminary statewide average total January precipitation was 1.19 inches, 1.12 inches below the 1991-2020 average and tied for the 28th driest on record statewide. Data are provisional […]

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