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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: 6:02 pm MDT Jun 23, 2026

Tonight Partly Cloudy	Wednesday Partly Sunny	Wednesday Night Slight Chance T-storms then Chance Showers	Thursday Chance Showers then Chance T-storms	Thursday Night Slight Chance T-storms then Mostly Cloudy	Friday Partly Sunny then Chance Showers	Friday Night Showers Likely	Saturday Showers	Saturday Night Showers then Rain/Snow Likely
Lo 38 °F	Hi 76 °F	Lo 38 °F	Hi 70 °F	Lo 39 °F	Hi 71 °F	Lo 38 °F	Hi 57 °F	Lo 30 °F

Tonight	Partly cloudy, with a low around 38. West northwest wind 5 to 8 mph becoming calm in the evening.
Wednesday	Partly sunny, with a high near 76. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night	A slight chance of showers and thunderstorms before midnight, then a chance of showers after 5am. Partly cloudy, with a low around 38. North northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday	A chance of showers, with thunderstorms also possible after 9am. Mostly sunny, with a high near 70. Calm wind becoming west 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Thursday Night	A 10 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 39. West wind around 5 mph becoming calm in the evening.
Friday	A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 71. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 30 mph.
Friday Night	A chance of showers and thunderstorms, then showers likely after midnight. Mostly cloudy, with a low around 38. South southwest wind 5 to 9 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Saturday	Showers and possibly a thunderstorm. High near 57. Chance of precipitation is 90%.
Saturday Night	Rain showers before 3am, then rain and snow showers likely. Some thunder is also possible. Snow level 9900 feet lowering to 8100 feet after midnight . Low around 30. Chance of precipitation is 80%.
Sunday	Snow showers likely before 3pm, then rain and snow showers likely. Some thunder is also possible. Snow level rising to 8100 feet in the afternoon. Partly sunny, with a high near 47. Chance of precipitation is 70%.
Sunday Night	A chance of rain and snow showers. Some thunder is also possible. Snow level 8300 feet lowering to 7600 feet after midnight . Partly cloudy, with a low around 27.
Monday	A chance of rain and snow showers. Some thunder is also possible. Snow level 7400 feet rising to 8900 feet in the afternoon. Partly sunny, with a high near 53.
Monday Night	A slight chance of showers and thunderstorms. Partly cloudy, with a low around 31.
Tuesday	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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