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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: 11:47 pm MDT Jul 13, 2026

Tonight Mostly Clear	Tuesday Sunny	Tuesday Night Isolated T-storms then Mostly Cloudy	Wednesday Mostly Sunny then Chance T-storms	Wednesday Night Chance T-storms then Partly Cloudy	Thursday Mostly Sunny then Chance T-storms	Thursday Night Chance T-storms then Partly Cloudy	Friday Mostly Sunny then Slight Chance T-storms	Friday Night Chance Showers then Partly Cloudy
Lo 48 °F	Hi 90 °F	Lo 50 °F	Hi 83 °F	Lo 46 °F	Hi 85 °F	Lo 47 °F	Hi 84 °F	Lo 48 °F

Tonight	Mostly clear, with a low around 48. South southeast wind around 5 mph becoming calm after midnight.
Tuesday	Sunny, with a high near 90. Calm wind becoming south southwest 5 to 9 mph in the afternoon.
Tuesday Night	Isolated showers and thunderstorms before 7pm. Mostly cloudy, with a low around 50. Light southeast wind. Chance of precipitation is 10%.
Wednesday	A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83. Calm wind becoming west southwest around 6 mph in the afternoon.
Wednesday Night	A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 46. Light and variable wind.
Thursday	A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 85. Light and variable wind.
Thursday Night	A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 47. Light east wind.
Friday	A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84.
Friday Night	A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 48.
Saturday	A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84.
Saturday Night	A chance of showers and thunderstorms. Mostly cloudy, with a low around 47.
Sunday	A chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Sunday Night	A chance of showers and thunderstorms. Mostly cloudy, with a low around 46.
Monday	A chance of showers and thunderstorms. Mostly sunny, with a high near 82.

Forecast from NOAA-NWS for Old Faithful WY.

Forecast Discussion from: NOAA-NWS

Script developed by: El Dorado Weather

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