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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: 9:18 am MST Dec 17, 2025
 
Today

Today: Snow showers, possibly mixed with rain, becoming all snow after noon, then gradually ending. The snow could be heavy at times. Some thunder is also possible. Temperature rising to near 34 by noon, then falling to around 20 during the remainder of the day. Windy, with a west wind 20 to 25 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 3 to 5 inches possible.
Rain/Snow and
Breezy then
Snow Showers
Likely and
Windy
 Tonight

Tonight: A 30 percent chance of snow showers after 4am. Partly cloudy, with a low around 11. Wind chill values as low as zero. Breezy, with a west wind 19 to 24 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 39 mph.
Breezy.
Partly Cloudy
then Chance
Snow Showers
 Thursday

Thursday: Snow showers, mainly after 11am. High near 31. Southwest wind 5 to 9 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Snow Showers


 Thursday
Night
Thursday Night: Snow showers. Low around 20. Southwest wind 9 to 14 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Snow Showers


 Friday

Friday: Snow showers. High near 35. Southwest wind around 14 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Snow Showers


 Friday
Night
Friday Night: Snow showers. Low around 16. West southwest wind 7 to 14 mph, with gusts as high as 37 mph. Chance of precipitation is 100%.
Snow Showers
then Snow
Showers
Likely
 Saturday

Saturday: Snow showers likely, mainly before 11am. Partly sunny, with a high near 29. West southwest wind 6 to 9 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Snow Showers
Likely

 Saturday
Night
Saturday Night: A 30 percent chance of snow showers. Mostly cloudy, with a low around 16.
Chance Snow
Showers

 Sunday

Sunday: Snow showers likely, mainly after 11am. Mostly cloudy, with a high near 35. Chance of precipitation is 70%.
Snow Showers
Likely
Hi 34 °F⇓ Lo 11 °F Hi 31 °F Lo 20 °F Hi 35 °F Lo 16 °F Hi 29 °F Lo 16 °F Hi 35 °F

Winter Storm Warning
Hazardous Weather Outlook
 

Today
 
 Snow showers, possibly mixed with rain, becoming all snow after noon, then gradually ending. The snow could be heavy at times. Some thunder is also possible. Temperature rising to near 34 by noon, then falling to around 20 during the remainder of the day. Windy, with a west wind 20 to 25 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 3 to 5 inches possible.
Tonight
 
 A 30 percent chance of snow showers after 4am. Partly cloudy, with a low around 11. Wind chill values as low as zero. Breezy, with a west wind 19 to 24 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 39 mph.
Thursday
 
 Snow showers, mainly after 11am. High near 31. Southwest wind 5 to 9 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
 
 Snow showers. Low around 20. Southwest wind 9 to 14 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Friday
 
 Snow showers. High near 35. Southwest wind around 14 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Friday Night
 
 Snow showers. Low around 16. West southwest wind 7 to 14 mph, with gusts as high as 37 mph. Chance of precipitation is 100%.
Saturday
 
 Snow showers likely, mainly before 11am. Partly sunny, with a high near 29. West southwest wind 6 to 9 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Saturday Night
 
 A 30 percent chance of snow showers. Mostly cloudy, with a low around 16.
Sunday
 
 Snow showers likely, mainly after 11am. Mostly cloudy, with a high near 35. Chance of precipitation is 70%.
Sunday Night
 
 Snow showers. Low around 26. Chance of precipitation is 80%.
Monday
 
 Snow showers. Mostly cloudy, with a high near 38.
Monday Night
 
 A chance of snow showers. Mostly cloudy, with a low around 25.
Tuesday
 
 A chance of snow showers. Mostly cloudy, with a high near 39.

 

Forecast from NOAA-NWS for Old Faithful WY.

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






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