National Weather Service Forecast for: Old Faithful WY
Issued by: National Weather Service Riverton, WY
Updated: 1:02 am MDT Apr 7, 2026
 
Overnight

Overnight: Mostly clear, with a steady temperature around 32. South southeast wind 3 to 6 mph.
Mostly Clear

 Tuesday

Tuesday: A 40 percent chance of showers, mainly after 3pm. Snow level rising to 9000 feet in the afternoon. Sunny, with a high near 54. Breezy, with a south wind 6 to 11 mph becoming west southwest 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
Sunny then
Chance
Showers and
Breezy
 Tuesday
Night
Tuesday Night: A slight chance of rain and snow showers before 10pm, then a slight chance of snow showers between 10pm and midnight. Partly cloudy, with a low around 24. Breezy, with a west wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 20%.
Slight Chance
Rain/Snow and
Breezy then
Partly Cloudy
 Wednesday

Wednesday: Sunny, with a high near 49. West southwest wind 5 to 11 mph.
Sunny

 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 27. West southwest wind 5 to 8 mph becoming calm after midnight.
Partly Cloudy

 Thursday

Thursday: Sunny, with a high near 54. Calm wind becoming west around 5 mph.
Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 29. Calm wind.
Partly Cloudy

 Friday

Friday: A 40 percent chance of showers and thunderstorms after noon. Snow level 8200 feet rising to 9500 feet in the afternoon. Partly sunny, with a high near 59.
Partly Sunny
then Chance
Showers
 Friday
Night
Friday Night: A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 33.
Chance
Showers then
Mostly Cloudy
Lo 32 °F Hi 54 °F Lo 24 °F Hi 49 °F Lo 27 °F Hi 54 °F Lo 29 °F Hi 59 °F Lo 33 °F

Hazardous Weather Outlook
 

Overnight
 
 Mostly clear, with a steady temperature around 32. South southeast wind 3 to 6 mph.
Tuesday
 
 A 40 percent chance of showers, mainly after 3pm. Snow level rising to 9000 feet in the afternoon. Sunny, with a high near 54. Breezy, with a south wind 6 to 11 mph becoming west southwest 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
Tuesday Night
 
 A slight chance of rain and snow showers before 10pm, then a slight chance of snow showers between 10pm and midnight. Partly cloudy, with a low around 24. Breezy, with a west wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 20%.
Wednesday
 
 Sunny, with a high near 49. West southwest wind 5 to 11 mph.
Wednesday Night
 
 Partly cloudy, with a low around 27. West southwest wind 5 to 8 mph becoming calm after midnight.
Thursday
 
 Sunny, with a high near 54. Calm wind becoming west around 5 mph.
Thursday Night
 
 Partly cloudy, with a low around 29. Calm wind.
Friday
 
 A 40 percent chance of showers and thunderstorms after noon. Snow level 8200 feet rising to 9500 feet in the afternoon. Partly sunny, with a high near 59.
Friday Night
 
 A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 33.
Saturday
 
 A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 57. Chance of precipitation is 50%.
Saturday Night
 
 A chance of showers. Mostly cloudy, with a low around 31.
Sunday
 
 Rain and snow showers. Some thunder is also possible. Snow level 8100 feet. Mostly cloudy, with a high near 49.
Sunday Night
 
 Rain and snow showers likely. Snow level 8100 feet lowering to 7400 feet after midnight . Mostly cloudy, with a low around 27.
Monday
 
 Snow showers. Some thunder is also possible. Partly sunny, with a high near 44.

 

Forecast from NOAA-NWS for Old Faithful WY.