National Weather Service Forecast for: Old Faithful WY
Issued by: National Weather Service Riverton, WY
Updated: 6:18 am MDT Jul 28, 2026
 
Today

Today: Areas of smoke before 4pm. Sunny, with a high near 84. Calm wind becoming southwest 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph.
Areas Smoke

 Tonight

Tonight: Patchy smoke between 7pm and midnight. Partly cloudy, with a low around 47. Southwest wind around 6 mph becoming calm in the evening.
Patchy Smoke
then Partly
Cloudy
 Wednesday

Wednesday: Scattered showers and thunderstorms, mainly between 2pm and 4pm. Increasing clouds, with a high near 83. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 30%.
Sunny then
Scattered
T-storms
 Wednesday
Night
Wednesday Night: A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 45. Light and variable wind.
Slight Chance
T-storms then
Mostly Clear
 Thursday

Thursday: Sunny, with a high near 84. Calm wind becoming west around 6 mph in the afternoon.
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 47. West wind around 5 mph becoming calm in the evening.
Mostly Clear

 Friday

Friday: Sunny, with a high near 87. Calm wind becoming west around 6 mph in the afternoon.
Sunny

 Friday
Night
Friday Night: Mostly clear, with a low around 47.
Mostly Clear

 Saturday

Saturday: Sunny, with a high near 90.
Sunny
Hi 84 °F Lo 47 °F Hi 83 °F Lo 45 °F Hi 84 °F Lo 47 °F Hi 87 °F Lo 47 °F Hi 90 °F

 

Today
 
 Areas of smoke before 4pm. Sunny, with a high near 84. Calm wind becoming southwest 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
 
 Patchy smoke between 7pm and midnight. Partly cloudy, with a low around 47. Southwest wind around 6 mph becoming calm in the evening.
Wednesday
 
 Scattered showers and thunderstorms, mainly between 2pm and 4pm. Increasing clouds, with a high near 83. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 30%.
Wednesday Night
 
 A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 45. Light and variable wind.
Thursday
 
 Sunny, with a high near 84. Calm wind becoming west around 6 mph in the afternoon.
Thursday Night
 
 Mostly clear, with a low around 47. West wind around 5 mph becoming calm in the evening.
Friday
 
 Sunny, with a high near 87. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
 
 Mostly clear, with a low around 47.
Saturday
 
 Sunny, with a high near 90.
Saturday Night
 
 Mostly clear, with a low around 50.
Sunday
 
 Sunny, with a high near 87.
Sunday Night
 
 Mostly clear, with a low around 43.
Monday
 
 Sunny, with a high near 79.

 

Forecast from NOAA-NWS for Old Faithful WY.