Illinois State Water Survey Illinois State Climatologist

Friday Wrapup – Illinois Very Cold and Dry in November

So far, November has been much colder and drier than average. The statewide average temperature is 34.6 degrees, which is 9 degrees below average. The statewide average precipitation (rainfall + water content of snow) was only 0.6 inches, about a third of the average through this date. There have been astounding snowfall totals in places […]

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Flood Risk on the Illinois and Mississippi Rivers

The heavy rainfall across the Midwest in recent weeks has increased the risk of flooding on the Illinois and Mississippi Rivers. Rainfall totals were highest in western Illinois, northern Missouri, much of Iowa, southeastern Minnesota, and western Wisconsin, and ranged from 6 to 12 inches in the last 30 days. See the MRCC map below. […]

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