4th Coldest Winter in Illinois and What Follows

More information about our winter in Illinois, and also some thoughts about what to expect this summer based on trends…

Illinois State Climatologist

I have received several questions about whether or not this winter is an indicator of the upcoming growing season. The good news is that, at least historically, a harsh winter is not followed by a harsh summer.

Analysis

The statewide average temperature for the three core winter months of December, January, and February was 20.8 degrees. That was 8.2 degrees below average and the fourth coldest December-February period on record. Here is how it compared with some other cold winters in Illinois.

Rank Year Avg.
1 1977-1978 19.6
2 1978-1979 19.9
3 1935-1936 20.6
4 1917-1918 20.8
4 1976-1977 20.8
4 2013-2014 20.8

By the way, the 1981-2010 statewide average is 29.0 degrees.

So what followed after these harsh winters? We will look at the winters of the late 1970s first. The plot below shows the monthly temperature departures from average for Illinois. After the first of the three…

View original post 172 more words

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About mwolske

I'm a Senior Research Scientist in Community Informatics at the Graduate School of Library and Information Science, University of Illinois.
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