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NWS Forecast for Old Faithful WY

National Weather Service Forecast for: Old Faithful WY
Issued by: National Weather Service Riverton, WY

Updated: 3:13 am MDT Sep 13, 2025

Overnight Isolated Showers	Saturday Scattered Showers then Scattered T-storms	Saturday Night Isolated T-storms then Mostly Clear	Sunday Sunny	Sunday Night Isolated T-storms then Scattered Showers	Monday Showers Likely	Monday Night Scattered Showers then Isolated Rain/Snow	Tuesday Isolated Rain/Snow then Scattered Showers	Tuesday Night Mostly Clear
Lo 37 °F	Hi 61 °F	Lo 32 °F	Hi 64 °F	Lo 34 °F	Hi 57 °F	Lo 28 °F	Hi 63 °F	Lo 29 °F

Hazardous Weather Outlook

Overnight	Isolated showers before 5am. Cloudy, with a steady temperature around 37. Calm wind. Chance of precipitation is 20%.
Saturday	Scattered showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 61. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 40%.
Saturday Night	Isolated showers and thunderstorms before 9pm. Partly cloudy, with a low around 32. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Sunday	Sunny, with a high near 64. Calm wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 21 mph.
Sunday Night	Isolated showers and thunderstorms, then scattered showers after 2am. Partly cloudy, with a low around 34. South wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday	Scattered showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. South southwest wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Monday Night	Scattered rain showers before 5am, then a slight chance of rain and snow showers. Some thunder is also possible. Partly cloudy, with a low around 28. Southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.
Tuesday	A slight chance of rain and snow showers before 7am, then scattered rain showers. Some thunder is also possible. Mostly sunny, with a high near 63. Chance of precipitation is 30%.
Tuesday Night	Mostly clear, with a low around 29.
Wednesday	Sunny, with a high near 67.
Wednesday Night	Clear, with a low around 31.
Thursday	Sunny, with a high near 68.
Thursday Night	Mostly clear, with a low around 33.
Friday	Isolated showers and thunderstorms. Mostly sunny, with a high near 68.

Forecast from NOAA-NWS for Old Faithful WY.

Forecast Discussion from: NOAA-NWS

Script developed by: El Dorado Weather

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