A WINTER WEATHER ADVISORY and WINTER STORM WARNING are posted through Tuesday morning for accumulating snow and slippery roads for all of NBC Montana, including Missoula, Bozeman, Butte and Kalispell. Generally, expect 2 to 4 inches of snow accumulation in the valleys with 4 to 8 inches at the passes.
The snow will slowly push south with the front and should pass over the Flathead Valley by early Monday afternoon. Behind the front, winds will increase and send wind chill values into the teens during the afternoon hours in the Flathead with similar effects expected elsewhere later in the day. By late Monday afternoon and evening, Missoula and Butte should see snow and wind with Bozeman and far southwest Montana seeing it by early evening. Highs will top out in the upper 20s to lower 30s ahead for the front, but quickly drop back into the teens after the front moves through. The best chance of snow will occur from 3 pm Monday through 9 am Tuesday.
Snow showers will quickly end Tuesday morning. However, the chill of winter will remain. Highs in the 10s in Bozeman and Butte to the 20s in Missoula and Kalispell. Lows Wednesday morning will drop well below zero in Bozeman and Butte to the single digits above zero in Missoula and Kalispell.
A nice warming trend will occur the latter half of the week and weekend. With sunshine, highs will warm to the 40s by Thursday and Friday and the 40s to around 50 by the weekend.
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