National Weather Service Forecast for: Rapid Valley SD
Issued by: National Weather Service Rapid City, SD
Updated: 2:32 am MDT Jun 30, 2026
 
Overnight

Overnight: Mostly clear, with a low around 53. North wind around 5 mph becoming light and variable.
Mostly Clear

 Tuesday

Tuesday: Sunny, with a high near 90. West wind 5 to 11 mph, with gusts as high as 25 mph.
Sunny

 Tuesday
Night
Tuesday Night: A 30 percent chance of showers, mainly after midnight. Increasing clouds, with a low around 59. North wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 22 mph.
Chance
Showers
 Wednesday

Wednesday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 87. Northwest wind 5 to 8 mph becoming east in the afternoon. Winds could gust as high as 18 mph.
Sunny then
Slight Chance
T-storms
 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 60. East wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 17 mph.
Partly Cloudy

 Thursday

Thursday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 91. Light and variable wind becoming southeast 9 to 14 mph in the morning. Winds could gust as high as 28 mph.
Mostly Sunny
then Chance
T-storms
 Thursday
Night
Thursday Night: Partly cloudy, with a low around 60.
Partly Cloudy

 Friday

Friday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 91.
Mostly Sunny
then Chance
T-storms
 Friday
Night
Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Chance
T-storms
Lo 53 °F Hi 90 °F Lo 59 °F Hi 87 °F Lo 60 °F Hi 91 °F Lo 60 °F Hi 91 °F Lo 60 °F

 

Overnight
 
 Mostly clear, with a low around 53. North wind around 5 mph becoming light and variable.
Tuesday
 
 Sunny, with a high near 90. West wind 5 to 11 mph, with gusts as high as 25 mph.
Tuesday Night
 
 A 30 percent chance of showers, mainly after midnight. Increasing clouds, with a low around 59. North wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 22 mph.
Wednesday
 
 A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 87. Northwest wind 5 to 8 mph becoming east in the afternoon. Winds could gust as high as 18 mph.
Wednesday Night
 
 Partly cloudy, with a low around 60. East wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 17 mph.
Thursday
 
 A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 91. Light and variable wind becoming southeast 9 to 14 mph in the morning. Winds could gust as high as 28 mph.
Thursday Night
 
 Partly cloudy, with a low around 60.
Friday
 
 A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 91.
Friday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Independence Day
 
 A chance of showers and thunderstorms after noon. Partly sunny, with a high near 86.
Saturday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 58.
Sunday
 
 Sunny, with a high near 91.
Sunday Night
 
 Mostly clear, with a low around 62.
Monday
 
 Mostly sunny, with a high near 94.

 

Forecast from NOAA-NWS for Rapid Valley SD.