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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: 6:31 am MDT Jul 16, 2026
 
Today

Today: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 84. Light and variable wind.
Sunny then
Slight Chance
T-storms
 Tonight

Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 46. Calm wind.
Chance
T-storms then
Partly Cloudy
 Friday

Friday: A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Mostly Cloudy
then Showers
Likely
 Friday
Night
Friday Night: Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 46. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely then
Slight Chance
Showers
 Saturday

Saturday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83. Light and variable wind.
Sunny then
Chance
T-storms
 Saturday
Night
Saturday Night: A 50 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 46. Calm wind.
Chance
T-storms then
Partly Cloudy
 Sunday

Sunday: Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Mostly Sunny

 Sunday
Night
Sunday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 46.
Slight Chance
T-storms then
Partly Cloudy
 Monday

Monday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.
Sunny then
Slight Chance
T-storms
Hi 84 °F Lo 46 °F Hi 84 °F Lo 46 °F Hi 83 °F Lo 46 °F Hi 84 °F Lo 46 °F Hi 83 °F

 

Today
 
 A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 84. Light and variable wind.
Tonight
 
 A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 46. Calm wind.
Friday
 
 A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 46. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
 
 A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83. Light and variable wind.
Saturday Night
 
 A 50 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 46. Calm wind.
Sunday
 
 Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
 
 A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 46.
Monday
 
 A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.
Monday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Tuesday
 
 Showers and thunderstorms likely. Partly sunny, with a high near 78.
Tuesday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 46.
Wednesday
 
 Showers and thunderstorms likely. Mostly sunny, with a high near 76.

 

Forecast from NOAA-NWS for Old Faithful WY.

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






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