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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: 12:31 am MDT Jul 26, 2026

Overnight Partly Cloudy	Sunday Chance T-storms	Sunday Night Partly Cloudy	Monday Partly Sunny then Slight Chance T-storms	Monday Night Mostly Clear	Tuesday Sunny	Tuesday Night Partly Cloudy	Wednesday Mostly Sunny then Slight Chance T-storms	Wednesday Night Slight Chance T-storms then Mostly Clear
Lo 48 °F	Hi 84 °F	Lo 49 °F	Hi 83 °F	Lo 47 °F	Hi 84 °F	Lo 47 °F	Hi 83 °F	Lo 46 °F

Overnight	Partly cloudy, with a low around 48. Light south southeast wind.
Sunday	A 30 percent chance of showers and thunderstorms, mainly between 1pm and 3pm. Mostly sunny, with a high near 84. Calm wind becoming west southwest 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night	Partly cloudy, with a low around 49. Southwest wind around 6 mph becoming calm in the evening.
Monday	A slight chance of showers and thunderstorms between 2pm and 3pm. Partly sunny, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 10%.
Monday Night	Mostly clear, with a low around 47. Southwest wind around 5 mph becoming calm in the evening.
Tuesday	Sunny, with a high near 84. Calm wind becoming west southwest 5 to 7 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night	Partly cloudy, with a low around 47. West southwest wind around 5 mph becoming calm in the evening.
Wednesday	A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.
Wednesday Night	A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 46.
Thursday	Sunny, with a high near 85.
Thursday Night	Mostly clear, with a low around 47.
Friday	Sunny, with a high near 88.
Friday Night	Mostly clear, with a low around 48.
Saturday	Sunny, with a high near 89.

Forecast from NOAA-NWS for Old Faithful WY.

Forecast Discussion from: NOAA-NWS

Script developed by: El Dorado Weather

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