January 2010 Climate Summary

January 2010 was 3 to 5 degrees colder than normal across central Illinois. It was the 10th coldest January on record in Lincoln, IL with an average monthly temperature of 18.7F which was nearly 5 degrees colder than normal.  Jan 1-12 was the 3rd coldest start to a January in Illinois with temperatures running nearly 14.5F degrees colder than normal. Precipitation was below normal east of the Illinois River in January 2010 and as much as around 1 inch below normal in southeast Illinois.  Areas west of the Illinois River were a quarter to half inch above normal precipitation.  Snowfall generally was zero to 2 inches below normal across central Illinois, though a few spots were above normal like Lincoln with 8.3 inches of snow (+2.7 inches) and Peoria with 8.6 inches of snow (+0.8 inches).

The arctic blast the first part of January brought wind chills as cold as 15 to 25 below zero at times during the first 10 days of the month across central Illinois and freezing fog was also common.  Sunday Jan 10 was the coldest morning with many areas having lows of 10 to 15 below zero.  A winter storm dumped 5 to 7 inches of snow along and north of I-72 Jan 6-7 with strong gusty winds creating blowing and drifting snow.  Between a tenth and quarter inch of freezing rain fell Wednesday Jan 20 across central Illinois with an ice storm bringing a quarter to half inch of ice north of Peoria and causing several power outages.  The warmest temperatures arrived on the weekend of Jan 23-24 with highs in the middle to upper 40s over central illinois and lower to middle 50s across southeast Illinois.  That weekend also had between a quarter to half inch of rain across eastern Illinois east of I-55 with a half to 1.25 inches over western Illinois from I-55 west with the heaviest amounts of 1 to 1.25 inches west of the Illinois River.  Another arctic air mass ushered into central Illinios during the last week of January with subfreezing temperatures running 5 to 10 degrees below normal from January 26-31, though not as cold as the first 10 days of the month.  

Jan 6-7, 2010 Snowfall & Jan 23-24, 210 Rainfall   

Illinois State Climatologist Review

Midwest Climate Watch

Here are the climate summaries across central Illinois for Jan 2010... 

 

January temperature departures from normal.  Image courtesy of the Midwest Regional Climate Center.

Precipitation percent of normal for January.  Image courtesy of the Midwestern Regional Climate Center. Snowfall departure from normal for January.  Image courtesy of the Midwest Regional Climate Center.

January 2010 Departure from normal temperatures. Image from the IL State Climatologist office and Midwest Regional Climate Center

January 2010 Departure from normal precipitation. Image from the IL State Climatologist office and Midwest Regional Climate Center

January 2010  Total snowfall for Illinois. 
Image from the State Climatologist office & Midwest Regional Climate Center



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