November Weather Summary

In contrast to the previous two months, rainfall reverted to the trends of spring and summer, with much below normal totals in November.  In fact, the entire region saw less than 50% of the typical monthly amounts (top center image, click to enlarge). Only one significant widespread rain event affected the area.  On November 11-12 a general half to one inch of rain fell ahead of a cold front with the heaviest amounts occuring south of a Jacksonville to Springfield to Robinson line (top left image). By the end of the month, lingering drought conditions continued to affect areas northwest of the Illinois River, while the drought had largely eased for much of central and eastern Illinois (top right image).

November 11-12 rainfall.  Courtesy of SWOP network.

% of normal rainfall for November.  Image courtesy of the High Plains Regional Climate Center.

Drought monitor as of November 27

November 11-12 rainfall

November % of normal rainfall

Drought status as of November 27

November temperatures versus normal.  Image courtesy of the High Plains Regional Climate Center.

Thanksgiving High Temperatures.  Courtesy of COOP network.

November temperatures versus normal

Thanksgiving high temperatures

Temperatures averaged 1 to 3 degrees below normal (bottom left image), with the most significant departures over the eastern portions of the state. Several rounds of Canadian airmasses set up over the region through the month, and produced below temperatures on two-thirds of days.  A couple noteable exceptions to the cold occurred.  Ahead of the cold front which produced the Nov. 11-12 rains, sustained southerly flow brought record warmth to the area.  Lows in the 50s and highs in the 70s were reported for the 10th-11th.  Another period of well above normal temperatures for Thanksgiving (Nov. 22) saw highs in the 60s which was only a couple degrees shy of being the warmest Thanksgiving on record (bottom right image). 

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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