December Weather Summary

December 2012 was a month which featured above normal temperatures and below normal precipitation (top left and center images, click to enlarge).  Snowfall was below normal for much of central Illinois, while southeast Illinois received much above normal snowfall (top right image). 

The first significant winter weather event of the season occurred during the afternoon and evening of Thursday, Dec. 20.  A powerful winter storm affected a large part of the Midwest, with the southern fringes of this storm affecting central Illinois with accumulating snow and very high winds, followed by plummeting temperatures.  Snow amounts of 1 to 5 inches (bottom left image) combined with wind gusts of 50 to 60 mph to produce blizzard conditions from parts of central Illinois north into the upper Midwest.  This event ended a streak of 290 consecutive days without measurable snow for Peoria and Urbana (4th longest streak on record), and Bloomington (8th longest streak on record). 

While the eastern and southeastern parts of central Illinois were largely missed by this first event, the next storm system on Christmas Day night took direct aim on these areas.  A strong low pressure system tracking from the lower Mississippi River valley northeast into Tennessee spread heavy snow from southern Missouri northeast through Indiana.  Snow totals of 6-15" were common from southern Illinois into central Indiana (bottom middle image). 

Another weaker system lifting through the same region brought another round of accumulating snow on New Year's Eve.  Amounts as high as 6-7" were reported in southeast Illinois (bottom right image).  These repeat heavy snows in southeast Illinois pushed the Lawrenceville Cooperative Weather Observing site to a record monthly snow total of 18.5", with records dating back to 1962.

December 2012 temperature departure from normal

December 2012 precipitation departure from normal

December 2012 snowfall

Dec. Temp. departure from normal

December % of normal precipitation

December Snowfall

December 20th snowfall 

December 26th Snowfall 

December 28th Snowfall

December 20th Snowfall

December 26th Snowfall

 December 28th Snowfall


Links below are the monthly climate summaries for area cities. Only the summaries for Peoria, Springfield and Lincoln are considered "official", meaning they are the station of record for their respective locations. The other summaries are "supplemental", meaning another location in the area is the official climate station for that city.

Climate data for other area cities is available at http://www.nws.noaa.gov/climate/xmacis.php?wfo=ilx



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