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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: 12:32 am MDT Apr 26, 2026

Overnight Mostly Cloudy	Sunday Snow Showers Likely	Sunday Night Snow Showers Likely	Monday Chance Snow Showers then Snow Showers	Monday Night Snow Showers Likely then Slight Chance Snow Showers	Tuesday Snow Showers Likely	Tuesday Night Chance Snow Showers	Wednesday Chance Snow Showers then Snow Showers Likely	Wednesday Night Slight Chance Snow Showers then Partly Cloudy
Lo 18 °F	Hi 41 °F	Lo 18 °F	Hi 41 °F	Lo 20 °F	Hi 42 °F	Lo 21 °F	Hi 46 °F	Lo 22 °F

Overnight	Mostly cloudy, with a low around 18. Calm wind.
Sunday	Snow showers likely, mainly after noon. Some thunder is also possible. Mostly cloudy, with a high near 41. Calm wind. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday Night	Snow showers likely before 3am, then a slight chance of snow showers after 5am. Mostly cloudy, with a low around 18. Calm wind. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Monday	Snow showers, mainly after noon. Some thunder is also possible. High near 41. Calm wind becoming southwest around 6 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday Night	Snow showers likely, mainly before midnight. Some thunder is also possible. Mostly cloudy, with a low around 20. Light southwest wind. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Tuesday	Snow showers likely. Some thunder is also possible. Partly sunny, with a high near 42. Calm wind becoming west around 6 mph in the morning. Chance of precipitation is 70%.
Tuesday Night	A 40 percent chance of snow showers, mainly before midnight. Some thunder is also possible. Partly cloudy, with a low around 21. Light and variable wind.
Wednesday	Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 46. Chance of precipitation is 70%.
Wednesday Night	A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 22.
Thursday	A 20 percent chance of snow showers after noon. Sunny, with a high near 50.
Thursday Night	Mostly clear, with a low around 22.
Friday	Sunny, with a high near 55.
Friday Night	Partly cloudy, with a low around 27.
Saturday	A slight chance of showers and thunderstorms. Snow level 8000 feet rising to 8800 feet in the afternoon. Mostly sunny, with a high near 59.

Forecast from NOAA-NWS for Old Faithful WY.

Forecast Discussion from: NOAA-NWS

Script developed by: El Dorado Weather

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