A wave of steady snow wrapping around the departing low has made it's way into northern Illinois prior to the morning commute.
With temperatures sitting below freezing, it's likely that roads will be slick or snow-covered. Not only will you have to deal with that, winds have picked up a bit, which along with the snow showers has caused visibility to drop. Plan on giving yourself extra time as well as using caution while traveling.
The good news is, snow won't last long. In fact, we are seeing the edge of the precipitation now make it's way into southern Wisconsin as of 5:30AM. Snow will wrap up before mid-morning, leaving us mostly cloudy, chilly and breezy. Temperatures will peak in the upper 20s early this afternoon, then fall into the mid to low 20s by the evening commute.
Astronomical winter begins Saturday, and boy will it feel like winter. Colder air filtering in behind today's snow-maker will leave tonight's lows in the low teens and highs Saturday in the low 20s.
On the plus side, winds will be much lighter and Saturday features the return of that beautiful gaseous orb in the sky (the sun). Sunday will also be dry, though cloud cover will slowly gather up as our next storm system begins to take shape.
This system will arrive Monday, bringing with it warmer temperatures but also a chance for a rain/snow mix. Forecast models this morning have come in with a more northerly jump in the track, leaving afternoon highs in the upper 30s. That's why I do think most of what falls Monday will be in the form of rain. Precipitation chances drop from there, leaving only a slight chance for rain Christmas Eve and Christmas Day. Afternoon highs will remain above freezing, landing in the upper 30s.
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