National Weather Service Forecast for: Rapid Valley SD
Issued by: National Weather Service Rapid City, SD
Updated: 2:52 pm MDT Jul 28, 2026
 
This
Afternoon
This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. East wind around 10 mph, with gusts as high as 21 mph.
Slight Chance
T-storms

 Tonight

Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 67. East wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Slight Chance
T-storms then
Mostly Clear
 Wednesday

Wednesday: A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 97. South wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 29 mph.
Sunny then
Chance
T-storms
 Wednesday
Night
Wednesday Night: Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 66. South wind 5 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
T-storms
Likely then
Chance
T-storms
 Thursday

Thursday: Showers likely and possibly a thunderstorm after noon. Cloudy, then gradually becoming mostly sunny, with a high near 92. West wind 5 to 10 mph becoming northwest 11 to 16 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%.
Partly Sunny
then Showers
Likely
 Thursday
Night
Thursday Night: Mostly clear, with a low around 62. North wind 10 to 15 mph becoming light west after midnight. Winds could gust as high as 29 mph.
Mostly Clear

 Friday

Friday: A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 92.
Sunny then
Chance
T-storms
 Friday
Night
Friday Night: Mostly clear, with a low around 64.
Mostly Clear

 Saturday

Saturday: Sunny, with a high near 97.
Sunny
Hi 95 °F Lo 67 °F Hi 97 °F Lo 66 °F Hi 92 °F Lo 62 °F Hi 92 °F Lo 64 °F Hi 97 °F

 

This Afternoon
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. East wind around 10 mph, with gusts as high as 21 mph.
Tonight
 
 A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 67. East wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Wednesday
 
 A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 97. South wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 29 mph.
Wednesday Night
 
 Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 66. South wind 5 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Thursday
 
 Showers likely and possibly a thunderstorm after noon. Cloudy, then gradually becoming mostly sunny, with a high near 92. West wind 5 to 10 mph becoming northwest 11 to 16 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%.
Thursday Night
 
 Mostly clear, with a low around 62. North wind 10 to 15 mph becoming light west after midnight. Winds could gust as high as 29 mph.
Friday
 
 A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 92.
Friday Night
 
 Mostly clear, with a low around 64.
Saturday
 
 Sunny, with a high near 97.
Saturday Night
 
 Clear, with a low around 70.
Sunday
 
 Sunny and hot, with a high near 104. Breezy.
Sunday Night
 
 Mostly clear, with a low around 70. Breezy.
Monday
 
 Sunny, with a high near 91. Windy.
Monday Night
 
 A slight chance of showers. Mostly clear, with a low around 60. Breezy.
Tuesday
 
 A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.

 

Forecast from NOAA-NWS for Rapid Valley SD.