NWS Forecast for: Mammoth WY Issued by: National Weather Service Riverton, WY Last Update: 1:01 pm MST Feb 10, 2026

Hazardous Weather Outlook This Afternoon: Mostly sunny, with a high near 38. Light south wind. Tonight: Partly cloudy, with a low around 20. South southeast wind 3 to 6 mph. Wednesday: Snow showers likely before 1pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 40. Southeast wind 3 to 6 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible. Wednesday Night: A slight chance of rain and snow showers before 11pm. Snow level 6200 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 28. Light south southwest wind. Chance of precipitation is 20%. Thursday: Mostly sunny, with a high near 43. Southwest wind 3 to 6 mph. Thursday Night: Mostly cloudy, with a low around 27. South wind around 6 mph. Friday: Partly sunny, with a high near 41. South wind around 6 mph. Friday Night: Mostly cloudy, with a low around 27. Saturday: Mostly cloudy, with a high near 40. Saturday Night: A 20 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 30. Sunday: A chance of snow showers. Mostly cloudy, with a high near 43. Sunday Night: A chance of rain and snow showers. Mostly cloudy, with a low around 30. Washington's Birthday: A chance of snow showers. Mostly sunny, with a high near 45.

Mammoth WY  44.98°N 110.69°W (Elev. 5745 ft)

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