Illinois was both warmer and wetter than the 1991–2020 normal in 2021. The statewide average annual temperature was 53.7 degrees, 1.1 degrees above normal and tied for the 10th warmest year on record. Statewide total precipitation in 2021 was 41.06 inches, 0.31 inches above normal and the 37th wettest year on record.
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