National Weather Service Forecast for: Rock Springs WY
Issued by: National Weather Service Riverton, WY
Updated: 12:03 pm MDT May 4, 2026
 
This
Afternoon
This Afternoon: Isolated showers and thunderstorms after 5pm.  Mostly sunny, with a high near 69. West wind 9 to 13 mph, with gusts as high as 20 mph.  Chance of precipitation is 20%.
Isolated
T-storms

Tonight

Tonight: Scattered showers and thunderstorms before midnight, then scattered showers after 5am.  Mostly cloudy, with a low around 34. Breezy, with a west wind 10 to 16 mph becoming east in the evening. Winds could gust as high as 24 mph.  Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Scattered
Showers and
Breezy

Tuesday

Tuesday: Rain and snow showers, mainly before 1pm. Some thunder is also possible.  High near 41. Breezy, with an east northeast wind 13 to 16 mph, with gusts as high as 24 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Breezy.
Rain/Snow
then
Rain/Snow
Likely
Tuesday
Night
Tuesday Night: Scattered snow showers, mainly before 4am.  Mostly cloudy, with a low around 25. Blustery, with an east northeast wind 11 to 18 mph, with gusts as high as 28 mph.  Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Scattered
Snow Showers
and Blustery

Wednesday

Wednesday: Mostly sunny, with a high near 51. Northeast wind 9 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.
Mostly Sunny


Wednesday
Night
Wednesday Night: Mostly clear, with a low around 31. West southwest wind 6 to 10 mph, with gusts as high as 21 mph.
Mostly Clear


Thursday

Thursday: Mostly sunny, with a high near 68. Breezy, with a west northwest wind 6 to 11 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 36 mph.
Mostly Sunny
then Partly
Sunny and
Breezy
Thursday
Night
Thursday Night: Partly cloudy, with a low around 39. Breezy.
Mostly Cloudy
and Breezy
then Partly
Cloudy
Friday

Friday: Mostly sunny, with a high near 71. Breezy.
Mostly Sunny
then Mostly
Sunny and
Breezy
Hi 69 °F Lo 34 °F Hi 41 °F Lo 25 °F Hi 51 °F Lo 31 °F Hi 68 °F Lo 39 °F Hi 71 °F

Hazardous Weather Outlook
 

This Afternoon
 
Isolated showers and thunderstorms after 5pm. Mostly sunny, with a high near 69. West wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
 
Scattered showers and thunderstorms before midnight, then scattered showers after 5am. Mostly cloudy, with a low around 34. Breezy, with a west wind 10 to 16 mph becoming east in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
 
Rain and snow showers, mainly before 1pm. Some thunder is also possible. High near 41. Breezy, with an east northeast wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday Night
 
Scattered snow showers, mainly before 4am. Mostly cloudy, with a low around 25. Blustery, with an east northeast wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Wednesday
 
Mostly sunny, with a high near 51. Northeast wind 9 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
 
Mostly clear, with a low around 31. West southwest wind 6 to 10 mph, with gusts as high as 21 mph.
Thursday
 
Mostly sunny, with a high near 68. Breezy, with a west northwest wind 6 to 11 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 36 mph.
Thursday Night
 
Partly cloudy, with a low around 39. Breezy.
Friday
 
Mostly sunny, with a high near 71. Breezy.
Friday Night
 
Mostly cloudy, with a low around 43.
Saturday
 
A chance of showers and thunderstorms. Mostly sunny, with a high near 65. Breezy.
Saturday Night
 
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 35.
Sunday
 
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 64.

 

Forecast from NOAA-NWS for Rock Springs WY.