Illinois State Water Survey Illinois State Climatologist

Seventh Wettest Spring on Record for Illinois

Total rainfall for March-May, 2011, in Illinois.

The statewide average rainfall of 5.6 inches in May, combined with the 2.8 inches in March and 7.3 inches in April, resulted in a total rainfall for this spring at 15.7 inches. That makes it the seventh wettest spring on record since 1895 and 4.3 inches above average. The heaviest spring rains fell in southern […]

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Seventh Wettest Spring on Record for Illinois

The statewide average rainfall of 5.6 inches in May, combined with the 2.8 inches in March and 7.3 inches in April, resulted in a total rainfall for this spring at 15.7 inches. That makes it the seventh wettest spring on record since 1895 and 4.3 inches above average. The heaviest spring rains fell in southern […]

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Spring Frost in Illinois

Frost in spring is a concern to farmers, landscapers, and gardeners. Frost in Illinois is usually not measured directly at weather stations. Instead, it is inferred from the air temperature – when the air temperature crosses the threshold of 32°F. The average date of the last spring occurrence of 32°F ranges from April 7 in […]

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Spring Frost in Illinois

Frost in spring is a concern to farmers, landscapers, and gardeners. Frost in Illinois is usually not measured directly at weather stations. Instead, it is inferred from the air temperature – when the air temperature crosses the threshold of 32°F. The average date of the last spring occurrence of 32°F ranges from April 7 in […]

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