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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: 1:34 pm MDT Oct 23, 2026

This Afternoon Rain/Snow	Tonight Rain/Snow and Patchy Fog then Patchy Fog	Saturday Areas Fog then Sunny	Saturday Night Mostly Clear	Sunday Sunny	Sunday Night Mostly Clear	Monday Mostly Sunny	Monday Night Slight Chance Rain/Snow then Chance Snow Showers	Tuesday Snow Showers Likely
Hi 44 °F	Lo 18 °F	Hi 46 °F	Lo 18 °F	Hi 50 °F	Lo 19 °F	Hi 49 °F	Lo 22 °F	Hi 44 °F

This Afternoon	Snow showers, possibly mixed with rain. Some thunder is also possible. Snow level 8300 feet. High near 44. South southwest wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Tonight	Snow showers, possibly mixed with rain before 10pm, then a chance of snow showers between 10pm and midnight. Patchy fog after 11pm. Low around 18. Southwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Saturday	Areas of fog before 8am. Otherwise, sunny, with a high near 46. Calm wind.
Saturday Night	Mostly clear, with a low around 18. Calm wind.
Sunday	Sunny, with a high near 50. Calm wind.
Sunday Night	Mostly clear, with a low around 19. Calm wind.
Monday	Mostly sunny, with a high near 49. Calm wind becoming south southwest around 5 mph.
Monday Night	A slight chance of rain showers before 9pm, then a chance of snow showers. Snow level 8600 feet lowering to 7400 feet after midnight . Partly cloudy, with a low around 22. Chance of precipitation is 30%.
Tuesday	Snow showers likely. Partly sunny, with a high near 44. Chance of precipitation is 70%.
Tuesday Night	Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 19. Chance of precipitation is 60%.
Wednesday	A chance of snow showers. Partly sunny, with a high near 42.
Wednesday Night	A slight chance of snow showers. Partly cloudy, with a low around 17.
Thursday	A slight chance of snow showers. Partly sunny, with a high near 47.

Forecast from NOAA-NWS for Old Faithful WY.

Forecast Discussion from: NOAA-NWS

Script developed by: El Dorado Weather

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