Sunshine early in the day allowed afternoon temperatures to warm into the low to mid 80s, but those numbers are beginning to drop across NW Illinois as a cold front moves through the region. Showers and isolated thunderstorms also developed along and ahead of the front but have quickly faded away, running into the drier air mass over northern Illinois.
Through the rest of the afternoon and early evening
we will see a slow climb in moisture (dew point temperatures), along with a slight strengthening in the winds aloft. These two factors, along with the approaching cold front, may allow for a slight uptick in shower activity east of Rockford after 5pm/6pm. But only scattered showers are expected.
Drier air moving back in behind the front will allow skies to turn partly cloudy overnight as lows dip into the mid-50s. Cooler air will then begin to settle in
Friday with some sunshine for the afternoon. The combination of the sunny skies and colder air aloft will cause clouds to build throughout the day, allowing scattered showers to develop into the evening. Afternoon highs will warm into the upper 60s and low 70s, falling into the mid-40s overnight.
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