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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: 11:47 am MDT Jun 5, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 69. Southwest wind around 8 mph, with gusts as high as 23 mph.
Sunny

 Tonight

Tonight: Increasing clouds, with a low around 39. Southwest wind 5 to 7 mph becoming light and variable in the evening. Winds could gust as high as 23 mph.
Increasing
Clouds

 Saturday

Saturday: Mostly sunny, with a high near 73. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 28 mph.
Mostly Sunny

 Saturday
Night
Saturday Night: A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 39. West southwest wind 5 to 8 mph becoming calm. Winds could gust as high as 25 mph.
Mostly Cloudy
then Chance
Showers
 Sunday

Sunday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 58. Southwest wind 5 to 11 mph, with gusts as high as 33 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Slight Chance
T-storms
 Sunday
Night
Sunday Night: Partly cloudy, with a low around 28. Southwest wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 33 mph.
Partly Cloudy

 Monday

Monday: Mostly sunny, with a high near 63. Calm wind becoming south southwest 5 to 8 mph in the morning. Winds could gust as high as 24 mph.
Mostly Sunny

 Monday
Night
Monday Night: A slight chance of showers and thunderstorms, then a chance of showers after midnight. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.
Slight Chance
T-storms then
Chance
Showers
 Tuesday

Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 59. Chance of precipitation is 50%.
Slight Chance
Showers then
Chance
T-storms
Hi 69 °F Lo 39 °F Hi 73 °F Lo 39 °F Hi 58 °F Lo 28 °F Hi 63 °F Lo 36 °F Hi 59 °F

 

This Afternoon
 
 Sunny, with a high near 69. Southwest wind around 8 mph, with gusts as high as 23 mph.
Tonight
 
 Increasing clouds, with a low around 39. Southwest wind 5 to 7 mph becoming light and variable in the evening. Winds could gust as high as 23 mph.
Saturday
 
 Mostly sunny, with a high near 73. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 28 mph.
Saturday Night
 
 A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 39. West southwest wind 5 to 8 mph becoming calm. Winds could gust as high as 25 mph.
Sunday
 
 A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 58. Southwest wind 5 to 11 mph, with gusts as high as 33 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
 Partly cloudy, with a low around 28. Southwest wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 33 mph.
Monday
 
 Mostly sunny, with a high near 63. Calm wind becoming south southwest 5 to 8 mph in the morning. Winds could gust as high as 24 mph.
Monday Night
 
 A slight chance of showers and thunderstorms, then a chance of showers after midnight. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.
Tuesday
 
 A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 59. Chance of precipitation is 50%.
Tuesday Night
 
 Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.
Wednesday
 
 Showers likely and possibly a thunderstorm. Partly sunny, with a high near 56.
Wednesday Night
 
 Rain and snow showers likely. Some thunder is also possible. Mostly cloudy, with a low around 31.
Thursday
 
 Rain and snow showers likely. Some thunder is also possible. Partly sunny, with a high near 51.

 

Forecast from NOAA-NWS for Old Faithful WY.

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






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