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Unseasonably Warm Temperatures Expected Through Early December

The month of November started off with unseasonably cool temperatures. Peoria experienced eight consecutive days with temperatures below average from November 6th through the 13th.

An active weather pattern sent additional shots of cold air, including one that brought parts of Central Illinois its first measurable snowfall of the year on November 19th. While Peoria only saw a trace amount of snowfall that day, Normal received a half inch of wet snow that covered Hancock Stadium in the middle of a Redbirds football game. 

Through Thanksgiving, much of Illinois has seen temperatures well below average including Peoria who's average temperature through November 23rd has been 3.5° cooler than normal. While temperatures have been cooler than average, precipitation has been near to below average while near to above average conditions have occurred along and east of I-55.

A Change in the Pattern

Black Friday brought more than great discounts to Central Illinois, the area also experienced a big pattern change. Peoria broke an 86 year old record when it hit a high temperature of 67° on November 24th. This unseasonably warm day marks the start of a pattern change that looks to keep much warmer weather in Central Illinois through the first week or two of December. 

An upper level trough is expected to remain in place just off the U.S. west coast which will help reinforce an upper level ridge east of the Rockies. With the exception of a few minor waves moving through, unseasonably mild and dry weather will likely persist through the first week or two of December. 

Long range models suggest that an upper level ridge will redevelop along the west coast and over Greenland during the second week of the month which will allow colder and more unsettled weather to return to the region. So enjoy this mild weather while you can, it may not be too long before the flakes fly again! 


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