High pressure will dominate western Montana's weather through the weekend. It means sunshine during the day, with clear skies and very cold temperatures at night and the possibility of fog in the mornings. Expect persistent low cloud cover and fog around the Flathead and Mission valleys with possible areas of fog and light lake-effect snow along highways 93 and 35, especially around Flathead Lake.
Lows Friday night in below zero in Butte to the single digits above zero in Missoula, Bozeman and Butte. The Missoula, Swan and Bitterroot valleys could see fog development Saturday morning with a chance for patchy fog this weekend in southwest Montana as well.
Light snow will be possible on Sunday around Yellowstone, but otherwise the weekend will be calm.
Milder weather will be back into the forecast next week with skies remaining mostly dry.
Stay alert to changing weather conditions by downloading our NBC Montana Severe Weather App.