Illinois State Water Survey Illinois State Climatologist

How February and This Winter Stacked Up in Illinois

Here are the time series plots of the statewide average temperature for February and winter (December-January-February) from 1895 to present (source: NOAA NCDC). February In the first plot, I have a red box around the temperature for 2014 and 2015. The only other time that we had a pair of extremely cold Februarys was 1978 […]

Read More from How February and This Winter Stacked Up in Illinois

February – 7th Coldest on Record for Illinois

The statewide average temperature for February was 18.6 degrees. That is 12.3 degrees below the 1981-2010 average and the 7th coldest February on record. By comparison, February 2014 was 9th coldest at 19.5 degrees. Here are some amazing statistics for Chicago. February was tied with 1875 for the coldest on record, according to the Chicago National […]

Read More from February – 7th Coldest on Record for Illinois

February – East Freezes While West Warms

While Illinois and the eastern half of the US freezes, temperatures in California and the West are well above average this month. Here is the map of temperature departures from average for the first 25 days of February. This pattern of extremes was the theme of 2014, diminished in December and January, only to return in February […]

Read More from February – East Freezes While West Warms

February On Track To Be Among The Coldest on Record for Illinois

February 2015 is on track to being one of the coldest February’s on record for Illinois. Data through February 24 puts the statewide average at 19.4° F. This is 11.5°F below average and slightly colder than last February’s 19.4°F. Before February, this was shaping up to be a mild winter with near to above-average temperatures […]

Read More from February On Track To Be Among The Coldest on Record for Illinois