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Yellowstone National Park, CA Weather Forecast
Wx Discussion - Wx Hazards - Wx Aviation
NWS Forecast for Old Faithful WY
National Weather Service Forecast for: Old Faithful WY
Issued by: National Weather Service Riverton, WY
Updated: 3:17 am MDT Mar 26, 2026
 
Today

Today: A slight chance of rain and snow showers between 7am and 8am. Mostly cloudy through mid morning, then gradual clearing, with a high near 42. West wind 6 to 10 mph. Chance of precipitation is 20%.
Slight Chance
Rain/Snow
then Sunny
 Tonight

Tonight: Clear, with a low around 17. West northwest wind 5 to 9 mph becoming calm in the evening.
Clear

 Friday

Friday: Sunny, with a high near 49. Calm wind becoming south southwest around 6 mph in the afternoon.
Sunny

 Friday
Night
Friday Night: Partly cloudy, with a low around 24. South southwest wind around 5 mph becoming calm in the evening.
Partly Cloudy

 Saturday

Saturday: Mostly sunny, with a high near 57. Calm wind becoming southwest around 5 mph.
Mostly Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 28. Light south southwest wind.
Partly Cloudy

 Sunday

Sunday: Sunny, with a high near 58. Calm wind becoming southwest 5 to 7 mph in the morning. Winds could gust as high as 23 mph.
Sunny

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 31.
Partly Cloudy

 Monday

Monday: A 30 percent chance of showers after noon. Snow level 8500 feet. Mostly sunny, with a high near 57.
Mostly Sunny
then Chance
Showers
Hi 42 °F Lo 17 °F Hi 49 °F Lo 24 °F Hi 57 °F Lo 28 °F Hi 58 °F Lo 31 °F Hi 57 °F

Hazardous Weather Outlook
 

Today
 
 A slight chance of rain and snow showers between 7am and 8am. Mostly cloudy through mid morning, then gradual clearing, with a high near 42. West wind 6 to 10 mph. Chance of precipitation is 20%.
Tonight
 
 Clear, with a low around 17. West northwest wind 5 to 9 mph becoming calm in the evening.
Friday
 
 Sunny, with a high near 49. Calm wind becoming south southwest around 6 mph in the afternoon.
Friday Night
 
 Partly cloudy, with a low around 24. South southwest wind around 5 mph becoming calm in the evening.
Saturday
 
 Mostly sunny, with a high near 57. Calm wind becoming southwest around 5 mph.
Saturday Night
 
 Partly cloudy, with a low around 28. Light south southwest wind.
Sunday
 
 Sunny, with a high near 58. Calm wind becoming southwest 5 to 7 mph in the morning. Winds could gust as high as 23 mph.
Sunday Night
 
 Partly cloudy, with a low around 31.
Monday
 
 A 30 percent chance of showers after noon. Snow level 8500 feet. Mostly sunny, with a high near 57.
Monday Night
 
 A chance of rain showers before midnight, then a chance of rain and snow showers. Snow level 8700 feet lowering to 7900 feet after midnight . Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Tuesday
 
 Snow showers likely, possibly mixed with rain. Some thunder is also possible. Mostly cloudy, with a high near 45.
Tuesday Night
 
 Snow showers likely. Mostly cloudy, with a low around 26.
Wednesday
 
 Snow showers. Partly sunny, with a high near 43.

 

Forecast from NOAA-NWS for Old Faithful WY.

Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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