December 2011 Weather Review -- Mild and Relatively Snowless

December 2011 Climate Summary

December of 2011 will go down as one that produced very little snowfall across the area, despite precipitation generally being above normal.

Departure from normal snowfall, December 2011.  Click image to enlarge

Most of the measurable snowfall was concentrated in a period from late on the 26th into the morning hours of the 27th.  Totals of 1 to 2 inches were common from about Taylorville to Rantoul, southeast to just south of I-70.  The highest totals included 3 inches at Hoopeston (Vermilion County), and 2.9 inches at Beecher City (Effingham County).  Areas further northwest also received up to 1 inch of snow on December 8-9, mainly north of a Rushville to Chenoa line, but also around Champaign and Danville.  Some specific totals for area cities:

  • Bloomington -- Trace
  • Charleston -- 0.8 inches
  • Decatur -- 0.7 inches
  • Effingham -- 1.0 inch
  • Flora -- Trace
  • Galesburg -- 0.8 inches
  • Jacksonville -- 0.4 inches
  • Lawrenceville -- 0.5 inches
  • Lincoln -- 0.3 inches
  • Olney -- 1.0 inch
  • Palestine -- 1.5 inches
  • Peoria -- 0.6 inches
  • Springfield -- 0.1 inch
  • Urbana -- 2.2 inches

Normal December snowfall ranges from 5 to 8 inches over most of central Illinois, and 2 to 4 inches in southeast Illinois.

 

Average temperature departure from normal for December.

Temperatures were well above normal, averaging 5 to 7 degrees above normal in many areas.  Only a few days had temperatures staying below freezing over much of the region.  Highs above 50 degrees occurred during several periods, including the 3-4th, 14-15th, 18-19th, and the last few days of the year.  High temperatures in southeast Illinois reached the lower 60s on the 15th. 

Even Christmas Day was quite mild, with highs ranging from the lower 40s north of I-74, to the lower 50s from Springfield southeast to Lawrenceville. 

Here are climate summaries for area cities.  Only Peoria, Springfield, and Lincoln are "official".  The remaining summaries are "supplemental", meaning they are not the official observing station for that location.

 



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