We are going to break out the infamous wind chill terminology for tonight. For many, it is still too early to hear that term being used, but it is that time of the year when these kinds of temperatures become the norm. In fact, the date for our average first frost has already passed, and October 7th (today) is when our average first freeze usually occurs by. Neither a frost nor a freeze event has happened yet in the area. It will be close tonight, but not quite cold enough to warrant a frost or freeze advisory. Our temperatures will fall off like a rock as clear skies, light northwesterly winds and high pressure dominate the region.
Expect temperatures to drop into the upper 30's in Rockford, but middle 30's are certainly possible in outlying areas, valleys, and the typically colder areas. Not only that, but we will have some northwesterly winds at 5-10mph. That will create wind chill factors in the middle 30's tonight, but lower 30's cannot be ruled out where the winds are slightly stronger. The good news is the 30's are not planning on hanging around for awhile. By Saturday night, our temperatures should hold in the lower 40's. Afternoon temperatures both Saturday and Sunday will recover nicely under abundant sunshine. Lower 60's are likely Saturday and middle 60's can be expected Sunday. Have a great fall-like weekend!