How Cold Is This January in Illinois?

How cold is this January in Illinois?

Based on preliminary data, the average temperature statewide is 20.0 degrees. That is 6.3 degrees below average and ranked as the 17th coldest January on record. Of course, if the forecast holds for the rest of January, we would end up colder. Here is a list of the 20 coldest monthly average temperatures in January. The column marked “Temperature” is for the January statewide temperature and the column marked “Departure” is for the departure from the 1981-2010 average of 26.3 degrees.

See how many you remember.

Rank Year Temperature Departure
1 1977 10.3 -16.0
2 1918 11.6 -14.7
3 1979 12.9 -13.4
4 1912 13.5 -12.8
5 1940 13.9 -12.4
6 1978 16.0 -10.3
7 1982 16.7 -9.6
7 1963 16.7 -9.6
9 1985 18.2 -8.1
9 1970 18.2 -8.1
11 1936 19.4 -6.9
12 1904 19.5 -6.8
13 1905 19.6 -6.7
14 1930 19.7 -6.6
15 1895 19.8 -6.5
16 1994 19.9 -6.4
17 2009 20.3 -6.0
17 1962 20.3 -6.0
19 1924 20.8 -5.5
20 2010 21.1 -5.2
20 1929 21.1 -5.2
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