National Weather Service Forecast for: Box Elder SD
Issued by: National Weather Service Rapid City, SD
Updated: 12:31 am MDT Aug 20, 2026
 
Overnight

Overnight: Mostly clear, with a low around 62. West wind 6 to 8 mph, with gusts as high as 17 mph.
Mostly Clear


 Thursday

Thursday: Sunny, with a high near 92. West wind 5 to 9 mph becoming north in the afternoon. Winds could gust as high as 22 mph.
Sunny


 Thursday
Night
Thursday Night: Patchy smoke between 8pm and 1am. Mostly clear, with a low around 62. Northeast wind 5 to 8 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Patchy Smoke


 Friday

Friday: Mostly sunny, with a high near 93. Light and variable wind becoming northeast 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Mostly Sunny


 Friday
Night
Friday Night: Mostly clear, with a low around 60. Northeast wind 6 to 11 mph becoming light north after midnight. Winds could gust as high as 22 mph.
Mostly Clear


 Saturday

Saturday: Mostly sunny, with a high near 87. Breezy, with a light and variable wind becoming southeast 15 to 20 mph in the morning. Winds could gust as high as 32 mph.
Mostly Sunny
then Mostly
Sunny and
Breezy
 Saturday
Night
Saturday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Breezy.
Chance
T-storms and
Breezy then
Chance
Showers
 Sunday

Sunday: Mostly sunny, with a high near 92.
Mostly Sunny


 Sunday
Night
Sunday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 64.
Slight Chance
T-storms then
Partly Cloudy
Lo 62 °F Hi 92 °F Lo 62 °F Hi 93 °F Lo 60 °F Hi 87 °F Lo 63 °F Hi 92 °F Lo 64 °F

 

Overnight
 
 Mostly clear, with a low around 62. West wind 6 to 8 mph, with gusts as high as 17 mph.
Thursday
 
 Sunny, with a high near 92. West wind 5 to 9 mph becoming north in the afternoon. Winds could gust as high as 22 mph.
Thursday Night
 
 Patchy smoke between 8pm and 1am. Mostly clear, with a low around 62. Northeast wind 5 to 8 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Friday
 
 Mostly sunny, with a high near 93. Light and variable wind becoming northeast 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Friday Night
 
 Mostly clear, with a low around 60. Northeast wind 6 to 11 mph becoming light north after midnight. Winds could gust as high as 22 mph.
Saturday
 
 Mostly sunny, with a high near 87. Breezy, with a light and variable wind becoming southeast 15 to 20 mph in the morning. Winds could gust as high as 32 mph.
Saturday Night
 
 A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Breezy.
Sunday
 
 Mostly sunny, with a high near 92.
Sunday Night
 
 A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 64.
Monday
 
 A slight chance of showers and thunderstorms after noon. Sunny, with a high near 91.
Monday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Tuesday
 
 A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Tuesday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Wednesday
 
 A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87.

 

Forecast from NOAA-NWS for Box Elder SD.