NWS Forecast for: Mammoth WY Issued by: National Weather Service Riverton, WY Last Update: 11:58 am MDT Jul 14, 2025

Hazardous Weather Outlook This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 90. West wind around 9 mph. Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 53. Southwest wind 5 to 9 mph becoming light south southwest after midnight. Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 79. Light and variable wind becoming west northwest 5 to 9 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Tuesday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Low around 51. North northeast wind around 7 mph. Chance of precipitation is 80%. Wednesday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 72. North wind 5 to 7 mph. Wednesday Night: Mostly clear, with a low around 48. North northwest wind 5 to 7 mph becoming southeast after midnight. Thursday: A 10 percent chance of showers and thunderstorms after noon. Sunny, with a high near 84. Southeast wind 6 to 11 mph becoming west southwest in the afternoon. Thursday Night: Mostly clear, with a low around 51. Friday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 86. Friday Night: Partly cloudy, with a low around 51. Saturday: A slight chance of showers and thunderstorms. Sunny, with a high near 87. Saturday Night: Partly cloudy, with a low around 52. Sunday: Mostly sunny, with a high near 85.

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

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