NWS Forecast for: Yellowstone National Park WY Issued by: National Weather Service Riverton, WY Last Update: 3:48 pm MDT Apr 20, 2026

Hazardous Weather Outlook This Afternoon: Mostly sunny, with a high near 55. Southwest wind around 10 mph. Tonight: Mostly cloudy, then gradually becoming clear, with a low around 29. West southwest wind 5 to 9 mph becoming south after midnight. Tuesday: Increasing clouds, with a high near 59. South wind 7 to 11 mph. Tuesday Night: Isolated showers. Mostly cloudy, with a low around 32. South southeast wind 3 to 5 mph. Chance of precipitation is 20%. Wednesday: Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 44. Southwest wind 5 to 11 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible. Wednesday Night: Snow showers. Some thunder is also possible. Low around 25. West southwest wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. Thursday: Snow showers. Some thunder is also possible. High near 36. West wind around 9 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. Thursday Night: Snow showers, mainly before midnight. Low around 16. Chance of precipitation is 80%. Friday: Snow showers likely. Some thunder is also possible. Partly sunny, with a high near 31. Chance of precipitation is 60%. Friday Night: A 40 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 11. Saturday: A chance of snow showers. Mostly sunny, with a high near 34. Saturday Night: A slight chance of snow showers. Partly cloudy, with a low around 14. Sunday: A chance of snow showers. Some thunder is also possible. Mostly sunny, with a high near 38.

Yellowstone National Park WY  44.57°N 110.5°W (Elev. 8340 ft)

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