National Weather Service Forecast for: Rock Springs WY
Issued by: National Weather Service Riverton, WY
Updated: 2:47 am MDT Aug 20, 2026
 
Overnight

Overnight: Mostly clear, with a low around 54. Light southwest wind.
Mostly Clear

Thursday

Thursday: A 20 percent chance of showers and thunderstorms after 3pm.  Sunny, with a high near 92. Breezy, with a light and variable wind becoming west southwest 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.
Sunny then
Slight Chance
T-storms and
Breezy
Thursday
Night
Thursday Night: A 20 percent chance of showers and thunderstorms before 9pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 57. Southwest wind 8 to 13 mph becoming light and variable  after midnight. Winds could gust as high as 20 mph.
Slight Chance
T-storms then
Partly Cloudy
Friday

Friday: Increasing clouds, with a high near 95. Calm wind becoming northwest around 6 mph in the afternoon.
Increasing
Clouds

Friday
Night
Friday Night: Mostly cloudy, with a low around 61. West northwest wind around 6 mph becoming calm  after midnight.
Mostly Cloudy

Saturday

Saturday: A 30 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 88. Light southwest wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.
Partly Sunny
then Chance
T-storms
Saturday
Night
Saturday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers.  Mostly cloudy, with a low around 55. West wind 6 to 11 mph becoming light and variable  in the evening. Winds could gust as high as 21 mph.  Chance of precipitation is 30%.
Chance
Showers

Sunday

Sunday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 86.
Mostly Sunny
then Slight
Chance
T-storms
Sunday
Night
Sunday Night: A 20 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 54.
Slight Chance
T-storms then
Mostly Cloudy
Lo 54 °F Hi 92 °F Lo 57 °F Hi 95 °F Lo 61 °F Hi 88 °F Lo 55 °F Hi 86 °F Lo 54 °F

 

Overnight
 
Mostly clear, with a low around 54. Light southwest wind.
Thursday
 
A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 92. Breezy, with a light and variable wind becoming west southwest 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
 
A 20 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 57. Southwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Friday
 
Increasing clouds, with a high near 95. Calm wind becoming northwest around 6 mph in the afternoon.
Friday Night
 
Mostly cloudy, with a low around 61. West northwest wind around 6 mph becoming calm after midnight.
Saturday
 
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 88. Light southwest wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.
Saturday Night
 
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 55. West wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 30%.
Sunday
 
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.
Sunday Night
 
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54.
Monday
 
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84.
Monday Night
 
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Tuesday
 
Mostly sunny, with a high near 84.
Tuesday Night
 
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Wednesday
 
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85.

 

Forecast from NOAA-NWS for Rock Springs WY.