National Weather Service Forecast for: Blackhawk SD
Issued by: National Weather Service Rapid City, SD
Updated: 8:07 pm MDT Jun 18, 2026
 
Tonight

Tonight: Partly cloudy, with a low around 53. Light and variable wind becoming northwest around 6 mph after midnight. Winds could gust as high as 16 mph.
Partly Cloudy

 Juneteenth

Juneteenth: Mostly sunny, with a high near 76. North wind 7 to 15 mph, with gusts as high as 29 mph.
Mostly Sunny

 Friday
Night
Friday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 51. North wind 5 to 8 mph becoming light and variable. Winds could gust as high as 22 mph.
Partly Cloudy
then Slight
Chance
Showers
 Saturday

Saturday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 75. Southeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 60%.
Slight Chance
Showers then
Showers
Likely
 Saturday
Night
Saturday Night: Showers and possibly a thunderstorm. Low around 54. Southeast wind 5 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
Showers

 Sunday

Sunday: Showers and possibly a thunderstorm. High near 66. East wind 5 to 11 mph becoming north in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Showers

 Sunday
Night
Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Chance
T-storms then
Chance
Showers
 Monday

Monday: A chance of showers, then showers and possibly a thunderstorm after noon. Partly sunny, with a high near 69.
Showers

 Monday
Night
Monday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 49.
Chance
T-storms then
Slight Chance
Showers
Lo 53 °F Hi 76 °F Lo 51 °F Hi 75 °F Lo 54 °F Hi 66 °F Lo 50 °F Hi 69 °F Lo 49 °F

 

Tonight
 
 Partly cloudy, with a low around 53. Light and variable wind becoming northwest around 6 mph after midnight. Winds could gust as high as 16 mph.
Juneteenth
 
 Mostly sunny, with a high near 76. North wind 7 to 15 mph, with gusts as high as 29 mph.
Friday Night
 
 A 20 percent chance of showers after midnight. Partly cloudy, with a low around 51. North wind 5 to 8 mph becoming light and variable. Winds could gust as high as 22 mph.
Saturday
 
 A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 75. Southeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 60%.
Saturday Night
 
 Showers and possibly a thunderstorm. Low around 54. Southeast wind 5 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
Sunday
 
 Showers and possibly a thunderstorm. High near 66. East wind 5 to 11 mph becoming north in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Sunday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Monday
 
 A chance of showers, then showers and possibly a thunderstorm after noon. Partly sunny, with a high near 69.
Monday Night
 
 A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 49.
Tuesday
 
 A slight chance of showers and thunderstorms after noon. Sunny, with a high near 73.
Tuesday Night
 
 Mostly clear, with a low around 50.
Wednesday
 
 A chance of showers and thunderstorms. Sunny, with a high near 74.
Wednesday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 53.
Thursday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 78.

 

Forecast from NOAA-NWS for Blackhawk SD.