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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: 3:47 pm MDT Aug 27, 2026
 
This
Afternoon
This Afternoon: Isolated showers and thunderstorms. Partly sunny, with a steady temperature around 75. Southwest wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Isolated
T-storms

 Tonight

Tonight: Scattered showers and thunderstorms before 2am, then isolated showers after 3am. Mostly cloudy, with a low around 45. Southwest wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 30%.
Scattered
T-storms then
Isolated
Showers
 Friday

Friday: Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, with a high near 68. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 Friday
Night
Friday Night: Showers and thunderstorms likely before 2am, then showers and possibly a thunderstorm between 2am and 3am, then showers after 3am. Low around 41. South southwest wind 3 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Scattered
Showers then
Showers
 Saturday

Saturday: Showers, with thunderstorms also possible after 9am. High near 62. Southwest wind 5 to 8 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Showers

 Saturday
Night
Saturday Night: Showers and possibly a thunderstorm. Low around 37. South wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Showers

 Sunday

Sunday: Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. High near 63. Southwest wind 5 to 10 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
Showers then
Chance
T-storms
 Sunday
Night
Sunday Night: Mostly clear, with a low around 32.
Mostly Clear

 Monday

Monday: Sunny, with a high near 67.
Sunny
Hi 75 °F Lo 45 °F Hi 68 °F Lo 41 °F Hi 62 °F Lo 37 °F Hi 63 °F Lo 32 °F Hi 67 °F

 

This Afternoon
 
 Isolated showers and thunderstorms. Partly sunny, with a steady temperature around 75. Southwest wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
 
 Scattered showers and thunderstorms before 2am, then isolated showers after 3am. Mostly cloudy, with a low around 45. Southwest wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 30%.
Friday
 
 Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, with a high near 68. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 Showers and thunderstorms likely before 2am, then showers and possibly a thunderstorm between 2am and 3am, then showers after 3am. Low around 41. South southwest wind 3 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
 
 Showers, with thunderstorms also possible after 9am. High near 62. Southwest wind 5 to 8 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
 
 Showers and possibly a thunderstorm. Low around 37. South wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Sunday
 
 Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. High near 63. Southwest wind 5 to 10 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
Sunday Night
 
 Mostly clear, with a low around 32.
Monday
 
 Sunny, with a high near 67.
Monday Night
 
 A 30 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 35.
Tuesday
 
 A slight chance of showers and thunderstorms. Mostly sunny, with a high near 69.
Tuesday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 36.
Wednesday
 
 A chance of showers and thunderstorms. Sunny, with a high near 65.
Wednesday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 35.
Thursday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 63.

 

Forecast from NOAA-NWS for Old Faithful WY.

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






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