November was an interesting month in Illinois. The four outstanding features were:
- the sixth wettest November on record with a statewide average precipitation amount of 5.23 inches, 1.9 inches above average; several sites in southern Illinois had over 9 inches of rain, including Cairo with 9.92 inches (the most of any site in the state);
- the end of drought for western and central Illinois as a result of the above average rainfall in November;
- the ninth warmest November on record with a statewide average temperature of 45.3 degrees, 3.6 degrees above average;
- the snowiest spot in the state was in far southern Illinois, 2.5 inches of snow fell by the morning of November 30 at Grand Chain Dam on the Ohio River. A few sites in northern Illinois reported an inch or less of snow. As was noted in an earlier post, the “normal” snowfall for November ranges from 1 to 2 inches in northern Illinois to no snowfall in southern Illinois – the near opposite of this year. It is just another example of Illinois weather “not playing by the rules.”
Statewide records of temperature and precipitation go back to 1895. Here are the precipitation and snowfall maps for November.