Average First Freeze

Temperatures Sunday night are forecast to fall into the upper 30's under partly cloudy skies.  With winds turning light, patchy frost is possible over northern Illinois and southern Wisconsin by Monday morning.


Widespread frost is not expected, but low lying and more typical 'cool' spots could develop patchy frost overnight.


On average, we typically experience our first freeze - 32 degrees or cooler - around the 10th of October and our first hard freeze - 28 degrees or cooler - around the 18th of October.  With such a mild fall so far, temperatures overnight have not fallen below 40 degrees in Rockford.  There have been some spots, like Freeport and Rochelle, that have experienced temperatures in the 30's.


Monday morning will be our coolest morning this week.  Winds shifting around to the southwest will bump not only high temperatures back into the 70's, but overnight lows back into the 40's and 50's.