WINTER STORM WARNING tonight for the Butte, Anaconda, Georgetown Lake, Philipsburg, Drummond and Deer Lodge areas along with MacDonald Pass where 2 to 6 inches of snow are possible.
WINTER WEATHER ADVISORY tonight for the Potomac, Seeley Swan areas north to Bigfork, Columbia Falls and West Glacier. It also includes Lost Trail and Marias Passes. Snowfall of 1 to 4 inches in these areas, with up to 6 inches at the passes.
Another wave of moisture and energy will move through the region tonight. Rain and snow are possible, with accumulations around Butte. West Yellowstone may see up to 2 inches with a mix in the Missoula, Kalispell and Bozeman areas. If temperatures drop a degree or two from expected lows, then slushy accumulations are possible about anywhere. Lows tonight in the 30s.
We should have variable cloudiness Friday before another wave of energy rotates through the region. This time, showers and thundershowers will be possible west of the divide around Missoula and Kalispell. Highs in the 50s to lower 60s.
A very unsettled weather pattern will continue this holiday weekend through next week. While there will be a chance of rain each day, there will also be nice dry breaks in the weather under partly cloudy skies. Highs in the 60s this weekend, warming to the lower 70s on Memorial Day and Tuesday.