Weather to remain somewhat unsettled for the first few days of fall

Astronomical fall begins today at 1:19PM. That is the moment when the sun's light crosses the celestial equator, resulting in nearly equal amounts of daylight and darkness for all parts of the Earth. Sunrise will be at 6:44AM while sunset will be at 6:52PM.

With the first afternoon of fall comes above-average temperatures as well as the chance for additional rainfall. Chances will be isolated and low during the day, though coverage will increase after sunset as our next cold front approaches. Especially for those north of the Illinois/Wisconsin border.

  

For that, the Storm Prediction Center has placed areas north of Freeport, Savanna, Rockton, and Poplar Grove under a Level 1 Marginal Risk. The biggest concern with any storm that becomes severe will be hail up to quarter size in diameter and winds up to 60 mph. By Tuesday afternoon, the focus for further development along this boundary will shift south of I-88. But just to be safe, I did leave an isolated chance for a shower or thunderstorm. 

Temperatures will end up cooler and not as summer-like, landing in the upper 70s today and tomorrow, then in the low 70s by Wednesday. Overnight lows will be rather comfortable, dropping into the low 60s the next few nights before dropping back down into the upper 50s Wednesday night.