A cold front is expected to stall out in the Rockford area overnight. It will be pulled back slightly to the northwest on Monday as a low moves from northeastern Kansas to northeastern Iowa by noon on Monday.. A very mild air flow will persist until Monday evening. Then, much colder weather will arrive on Monday night as a strong cold front blasts southeast across the Stateline. In the interim with very moist air in place, there could be some showers overnight. Even a thunderstorm is rolling through eastern Iowa toward northwestern Illinois as of 11pm on Sunday night. On Monday, with a front nearby, and disturbances rolling in from the southwest, there will be a good chance of showers, and even some thunderstorms. Afternoon highs on Monday will be in the low 60's. Showers will come to an end in the evening with the passage of a cold front dropping temperatures sharply into the 20's overnight. Tuesday will be mostly sunny and much colder with a high in the upper 30's with Canadian high pressure over the northern plains dominating the weather across the upper midwest. That high will shift eastward across the Great Lakes by Wednesday morning as a large area of low pressure spins out of the mountains of Colorado to a position over northern Minnesota by early Thanksgiving Day allowing a fresh blast of Canadian arctic air to chill northern Illinois along with a chance of a few snow flurries or snow showers. High temperatures on Thanksgiving Day are only expected to be in the low 30's, and in fact, temperatures will probably drop back into the upper 20's by late Thursday afternoon. Windy conditions will add to the discomfort with wind chills becoming a factor. The cold blustery conditions will persist through Friday. The wind will ease up on Saturday as high pressure takes full control of Stateline weather. Temperatures will slowly moderate upward during the weekend under mostly sunny skies.
By Meteorolgist
Eric Nefstead
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