Low temps will likely range between -5 and -20 across much of Northern Illinois, with low temps of 5 to -5 across Central Illinois. Winds will be light to nearly calm, which is the one big change from last night, and will help keep wind chills a bit lower. Wind chills of -10 to -25 are likely across much of Northern Illinois, with wind chills of 0 to -10 across Central Illinois.
Across Southern Illinois, temps and wind chills will not be nearly as cold, with low temps ranging from the 10's to 20's.
Below is our TAM temp/wind chill forecast, which was issued last evening.