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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: 6:18 am MDT May 16, 2026
 
Today

Today: A slight chance of rain and snow showers before 3pm, then scattered rain showers between 3pm and 5pm. Some thunder is also possible. Snow level rising to 8000 feet in the afternoon. Mostly cloudy, with a high near 51. Breezy, with a southwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Mostly Cloudy
then
Scattered
Rain/Snow and
Breezy
 Tonight

Tonight: Scattered rain and snow showers before 9pm, then scattered snow showers after 11pm. Mostly cloudy, with a low around 25. Breezy, with a southwest wind 12 to 17 mph becoming light and variable after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Scattered
Rain/Snow and
Breezy then
Scattered
Snow Showers
 Sunday

Sunday: A chance of snow showers before 10am, then a slight chance of snow showers after 11am. Some thunder is also possible. Mostly cloudy, with a high near 41. Calm wind becoming north northwest around 5 mph in the afternoon. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Chance Snow
Showers

 Sunday
Night
Sunday Night: A 40 percent chance of snow showers. Mostly cloudy, with a low around 22. North northeast wind 6 to 8 mph, with gusts as high as 23 mph. Little or no snow accumulation expected.
Chance Snow
Showers

 Monday

Monday: A 40 percent chance of snow showers, mainly before noon. Some thunder is also possible. Mostly cloudy, with a high near 40. North northeast wind 5 to 9 mph, with gusts as high as 23 mph. Little or no snow accumulation expected.
Chance Snow
Showers

 Monday
Night
Monday Night: A 10 percent chance of snow showers before midnight. Partly cloudy, with a low around 20. North wind around 5 mph becoming calm in the evening.
Slight Chance
Snow Showers
then Partly
Cloudy
 Tuesday

Tuesday: A 10 percent chance of snow showers after noon. Some thunder is also possible. Mostly sunny, with a high near 48. Light and variable wind.
Mostly Sunny
then Slight
Chance Snow
Showers
 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 25.
Mostly Cloudy


 Wednesday

Wednesday: A slight chance of snow showers between noon and 3pm, then a slight chance of rain showers after 3pm. Some thunder is also possible. Mostly sunny, with a high near 52. Chance of precipitation is 10%.
Mostly Sunny
then Slight
Chance
Rain/Snow
Hi 51 °F Lo 25 °F Hi 41 °F Lo 22 °F Hi 40 °F Lo 20 °F Hi 48 °F Lo 25 °F Hi 52 °F

 

Today
 
 A slight chance of rain and snow showers before 3pm, then scattered rain showers between 3pm and 5pm. Some thunder is also possible. Snow level rising to 8000 feet in the afternoon. Mostly cloudy, with a high near 51. Breezy, with a southwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tonight
 
 Scattered rain and snow showers before 9pm, then scattered snow showers after 11pm. Mostly cloudy, with a low around 25. Breezy, with a southwest wind 12 to 17 mph becoming light and variable after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday
 
 A chance of snow showers before 10am, then a slight chance of snow showers after 11am. Some thunder is also possible. Mostly cloudy, with a high near 41. Calm wind becoming north northwest around 5 mph in the afternoon. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Sunday Night
 
 A 40 percent chance of snow showers. Mostly cloudy, with a low around 22. North northeast wind 6 to 8 mph, with gusts as high as 23 mph. Little or no snow accumulation expected.
Monday
 
 A 40 percent chance of snow showers, mainly before noon. Some thunder is also possible. Mostly cloudy, with a high near 40. North northeast wind 5 to 9 mph, with gusts as high as 23 mph. Little or no snow accumulation expected.
Monday Night
 
 A 10 percent chance of snow showers before midnight. Partly cloudy, with a low around 20. North wind around 5 mph becoming calm in the evening.
Tuesday
 
 A 10 percent chance of snow showers after noon. Some thunder is also possible. Mostly sunny, with a high near 48. Light and variable wind.
Tuesday Night
 
 Mostly cloudy, with a low around 25.
Wednesday
 
 A slight chance of snow showers between noon and 3pm, then a slight chance of rain showers after 3pm. Some thunder is also possible. Mostly sunny, with a high near 52. Chance of precipitation is 10%.
Wednesday Night
 
 Partly cloudy, with a low around 28.
Thursday
 
 Sunny, with a high near 59.
Thursday Night
 
 Partly cloudy, with a low around 32.
Friday
 
 A slight chance of showers and thunderstorms. Sunny, with a high near 64.

 

Forecast from NOAA-NWS for Old Faithful WY.

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






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