WINTER WEATHER ADVISORY through early Saturday for Lookout, Lolo and Marias passes where 1 to 2 inches of additional snow are possible.
A fast moving Pacific cold front will bring a round of rain and snow to the region tonight, with the best chance in Missoula and Kalipsell between 6 pm and midnight Friday evening and between 9 pm and 3 am Saturday in Butte and Bozeman. The rain showers and drizzle will briefly change to snow showers. A trace to an inch or two will be possible in the Seeley Lake, Bozeman and West Yellowstone areas.
Quickly improving conditions are expected Saturday. Bozeman may see an early morning snow shower. Skies will become partly cloudy with highs in the mid 40s to around 50.
Another storm system will approach the region Sunday. Gusty winds and very mild weather is expected Sunday, with highs in the 50s to around 60. Winds may gust up to 30 and 40 mph along the I-90 corridor from Missoula to the Butte and Bozeman areas. Rain showers will develop by afternoon across northwest Montana around Kalispell, especially along the Canadian and Idaho borders.
There will be a chance of rain and snow area wide Sunday night and Monday.