Weather Alerts For Grantsdale, MT

URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1143 AM MST Sun Dec 21 2025 Missoula/Bitterroot Valleys- 1143 AM MST Sun Dec 21 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 11 AM MST MONDAY... * WHAT...Snow. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Snow accumulations up to 1 inch in the Missoula Valley, 1 to 2 inches in the Bitterroot Valley. A wintry mix may occur. * WHERE...Missoula and Bitterroot Valley. * WHEN...From 6 PM this evening to 11 AM MST Monday. * IMPACTS...For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. For MODERATE winter weather impacts, expect disruptions to normal activities. Use extra caution while driving. The Monday morning commute could be affected, especially over higher passes. * ADDITIONAL DETAILS...Snow may switch to a wintry mix or rain at times. Should snow levels rise slower than forecast, an additional 1 to 2 inches of snow is possible, particularly in the Bitterroot Valley. Watch out for black ice during the night. Take it slow, especially around curves. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. &&