Illinois State Climatologist

Here are the average dates in fall when the 4-inch soil temperature falls below 50 degrees (left panel) and below 60 degrees (right panel). Consider these as a "rule of ...

The Illinois State Water Survey operates a network of 19 sites that report daily soil temperatures at 4 and 8 inches. Soil temperatures in the fall are critical for the ...

Frost is defined as ice crystals that form on a freezing surface as moist air comes in contact with it. Farmers, landscapers, and gardeners are interested in frost in both spring ...

Illinois experienced temperatures close to normal for September. The statewide average temperature was 66.8 degrees, just 0.6 degrees above normal. During the month, many stations in southern Illinois had reported ...

One of the best things about this time of year is the fall color. I suppose I'm hopelessly Midwestern because I even enjoy the change in color of the corn ...