Warm Midwest Temperatures Set All-Time Record for November, Illinois State Water Survey

Press Release

For Immediate Release December 4, 2001
Warm Midwest Temperatures Set All-Time Record for November

Source:   

Contact:   
Steve Hilberg - (217) 333-8495, Fax: (217) 244-0220, hberg@illinois.edu
Mike Palecki - (217) 333-8506, Fax: (217) 244-0220, palecki@illinois.edu
Eva Kingston - (217) 244-7270, Fax: (217) 333-6540, eva@sws.uiuc.edu

With an average temperature of 46.5oF, the Midwest experienced its warmest November in the climate record dating back to 1895, shattering the 1931 record by 1.5 degrees, according to the Midwestern Regional Climate Center, located at the Illinois State Water Survey in Champaign, Illinois.

Four states set records for highest monthly average temperatures: Iowa (47.3oF), Michigan (43.7oF), Wisconsin (42.9oF), and Minnesota (40.8oF). It was also the third warmest November in Illinois (49.4oF), Indiana (49.0oF), and Ohio (47.8oF); fourth warmest in Missouri (50.7oF); and fifth warmest in Kentucky (51.5oF).

"The remarkable thing about this warm November weather was its intensity and duration. The average temperature was 11.8 degrees above normal in Minnesota and 10.7 degrees above normal in Iowa, breaking the old records by more than 2.5 and 3 degrees, respectively," says Steve Hilberg MRCC Director.

The warmest temperatures were in the western and northern Midwest for almost the entire month, while the eastern and southern Midwest were slightly cooler. With the exception of a few weak, rapidly moving storm systems, high pressure dominated, which shifted the jet stream and cold air to the north. The pattern ended after an intense low pressure center and strong cold front moved through on November 24 and 25.

The record temperature levels would have been even greater, but colder weather arrived during the last week of November. "The monthly departures from normal were actually running 2-3 degrees warmer until November 25, especially in the western portion of the region," says Hilberg.


November Temperature Averages and Ranks for the Midwest
State and rank  Average (oF)  Departure
from normal (oF)
Record (oF)
Minnesota (1) 40.8 +11.8 38.3 (1899)
Iowa (1) 47.3 +10.7 44.2 (1999)
Wisconsin (1) 42.9 + 9.9 40.0 (1999)
Michigan (1) 43.7 + 7.6 42.6 (1931)
Illinois (3) 49.4 + 7.4 49.7 (1931)
Indiana (3) 49.0 + 6.4 49.9 (1931)
Missouri (4) 50.7 + 6.2 52.6 (1909)
Ohio (3) 47.8 + 5.8 49.3 (1931)
Kentucky (5) 51.5 + 5.0 53.7 (1931)
Midwest (1) 46.5 + 8.3 45.0 (1931)


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