Wind chills as low as 50 degrees below zero still are possible through Thursday afternoon, according to the National Weather Service.
Overnight lows Tuesday night ranged from 20 to 25 degrees below zero, with wind chills as low as 55 below, NWS meteorologist Stephen Rodriguez said. Cold winds continued to sweep through McHenry County Wednesday night, creating temperatures as low as 31 degrees below zero and wind chills at 45 below zero, he said.
However, Rodriguez said the big difference between Tuesday and Wednesday night is that there would be weaker winds Wednesday night – with gusts of 10 to 15 mph predicted.
Light snow ranging from 1 to 2 inches is anticipated starting Thursday afternoon. Rodriguez said slippery conditions might affect evening commutes.
A wind chill warning still is in effect until noon Thursday, according to the National Weather Service. During this time, the chances of frostbite or hypothermia are more likely.
The cold record for McHenry County is 22 degrees below zero, set in 1915.