NWS Forecast for: West Yellowstone MT Issued by: National Weather Service Great Falls, MT Last Update: 4:06 pm MDT Apr 20, 2026

Winter Storm Watch Tonight: Partly cloudy, with a low around 29. Southwest wind around 5 mph becoming calm in the evening. Tuesday: Mostly sunny, with a high near 66. Calm wind becoming south southwest 5 to 8 mph in the afternoon. Winds could gust as high as 23 mph. Tuesday Night: A 20 percent chance of rain after midnight. Partly cloudy, with a low around 33. South southeast wind 3 to 7 mph. Winds could gust as high as 22 mph. Wednesday: A chance of rain before 9am, then rain and snow showers. Some thunder is also possible. High near 49. South wind 5 to 15 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. Little or no snow accumulation expected. Wednesday Night: Rain and snow, becoming all snow after 9pm. Low around 27. Southwest wind 6 to 13 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible. Thursday: Snow before noon, then snow showers after noon. Some thunder is also possible. High near 42. West southwest wind 5 to 9 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible. Thursday Night: Snow, mainly before midnight. Low around 17. West northwest wind 5 to 9 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible. Friday: Snow likely, mainly after noon. Mostly cloudy, with a high near 37. North wind 5 to 7 mph, with gusts as high as 20 mph. Friday Night: A chance of snow before midnight. Partly cloudy, with a low around 12. Saturday: A slight chance of snow. Mostly sunny, with a high near 41. Saturday Night: A slight chance of snow. Partly cloudy, with a low around 14. Sunday: A slight chance of snow. Mostly sunny, with a high near 45. Sunday Night: A slight chance of snow. Partly cloudy, with a low around 17. Monday: A slight chance of snow. Mostly sunny, with a high near 49.

West Yellowstone MT  44.67°N 111.09°W (Elev. 6686 ft)

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