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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: 2:33 am MDT May 26, 2026

Overnight Partly Cloudy	Tuesday Chance Showers then Showers	Tuesday Night Chance T-storms then Partly Cloudy	Wednesday Sunny then Slight Chance T-storms	Wednesday Night Mostly Clear	Thursday Sunny	Thursday Night Partly Cloudy	Friday Mostly Sunny	Friday Night Slight Chance T-storms then Slight Chance Showers
Lo 35 °F	Hi 67 °F	Lo 37 °F	Hi 73 °F	Lo 40 °F	Hi 77 °F	Lo 40 °F	Hi 71 °F	Lo 34 °F

Overnight	Partly cloudy, with a low around 35. East wind 5 to 7 mph becoming south southeast.
Tuesday	Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 67. Light south southeast wind becoming south 5 to 10 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night	A 40 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 37. Southeast wind 5 to 8 mph.
Wednesday	A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73. Calm wind becoming south southeast around 5 mph.
Wednesday Night	Mostly clear, with a low around 40. Light east southeast wind.
Thursday	Sunny, with a high near 77. Calm wind becoming south southeast around 5 mph in the afternoon.
Thursday Night	Partly cloudy, with a low around 40. Light southeast wind.
Friday	Mostly sunny, with a high near 71.
Friday Night	A slight chance of showers and thunderstorms. Partly cloudy, with a low around 34. Chance of precipitation is 20%.
Saturday	A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 55. Chance of precipitation is 60%.
Saturday Night	A chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 32.
Sunday	A chance of showers and thunderstorms. Mostly sunny, with a high near 61.
Sunday Night	Partly cloudy, with a low around 34.
Monday	A slight chance of showers and thunderstorms. Sunny, with a high near 63.

Forecast from NOAA-NWS for Old Faithful WY.

Forecast Discussion from: NOAA-NWS

Script developed by: El Dorado Weather

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