Today blustery northwest winds will increase lake effect snow. In addition, the coldest air mass of the season will drop southward and brush Upper Michigan as it heads straight for the northeastern United States this weekend. Highs today fall from what they are right now. Most locations will be only in the single numbers for daytime highs with temperatures falling near zero by late in the day. Snow showers and blowing snow is expected across most of northern Upper Michigan. The worst conditions in terms of visibility is expected near Lake Superior, especially from near Harvey to Munising on M-28. That is why a Lake Effect Snow Warning is posted for Marquette and Alger Counties today.
Tomorrow, plan on bitter cold with snow showers and flurries north and partly cloudy skies south. Highs will mainly be in the single numbers with a number of locations in the eastern portion of Upper Michigan staying near to below zero all day. On Saturday night, arctic high pressure will drift right across Upper Michigan. That means clearing skies for most except right near the Lake Superior shore in the east. Clear skies and light winds will lead to the coldest night of the year in most locations. Lows will be well below zero nearly everywhere with the coldest spots likely dropping to 20 below zero or lower.
On Sunday the high will drift eastward. Look for sunshine with some increase in cloudiness. Some lake effect snow showers may develop off Lake Michigan into eastern sections as winds turn to the south. Highs will mainly be in the teens but may touch 20 in the far west. Warmer weather is expected next week with temperatures again rising to above average values.
Today's Record Temperatures