Tuesday, December 17, 2019

Conditions Remain Tranquil, Colder Air Arrives for Wednesday

Tuesday is off to a mostly cloudy start for some, especially if you live to the west of Rockford. A deck of clouds roamed into the Stateline from the north turning our skies mostly cloudy earlier this morning. It was also a very cold start to the day as temperatures dropped down into the mid to upper teens. The chill was real though as wind chills for most were in the single digits. Eventually, clouds give way to some sunshine this afternoon with highs climbing into the low 30s. This sits right around where we should be for this time of year as the average high for mid-December is around 32°. Regardless of today's high, a much cooler day is ahead for Wednesday.

A cold front is currently positioned across the far northern Upper Midwest. The cold front is poised to move through the Stateline this evening, bringing a return to gusty northwesterly winds and cooler temperatures for midweek. This cold front is going to be moisture starved as it progresses through the Stateline. But a passing flurry cannot be ruled out. Winds at the surface post frontal passage will switch to the northwest and allow the cold air to filter into the region. The coldest of the air according to model guidance stays to our northeast. However, very cold wind chills will make it feel like temperatures are below zero for a good portion of our morning. Highs tomorrow only make it into the low 20s, nearly 10° below average. The dry weather will continue into Wednesday as an area of high pressure settles in. The second half of the week brings a return to warmer-than-average temperatures. If you're not a fan of this winter-like chill, highs will climb into the mid to upper 30s on Thursday, and low 40s over the weekend.

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