National Weather Service Forecast for: Spearfish SD
Issued by: National Weather Service Rapid City, SD
Updated: 5:21 am MDT Jun 22, 2026
 
Overnight

Overnight: Areas of drizzle. Patchy fog. Otherwise, cloudy, with a low around 52. Calm wind.
Areas Drizzle
and Patchy
Fog

 Monday

Monday: Areas of drizzle, then showers and thunderstorms likely after 9am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 72. Calm wind becoming east 5 to 8 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%.
Areas Showers
and Patchy
Fog then
T-storms
Likely
 Monday
Night
Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55. East wind 5 to 7 mph becoming light and variable. Winds could gust as high as 18 mph.
Chance
T-storms

 Tuesday

Tuesday: A 20 percent chance of showers and thunderstorms before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 70. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.
Slight Chance
T-storms then
Mostly Sunny

 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 50. Northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Partly Cloudy


 Wednesday

Wednesday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 69. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 50%.
Chance
Showers

 Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 51. Chance of precipitation is 30%.
Chance
Showers

 Thursday

Thursday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 72.
Showers
Likely

 Thursday
Night
Thursday Night: Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 55.
Showers
Likely then
Slight Chance
T-storms
Lo 52 °F Hi 72 °F Lo 55 °F Hi 70 °F Lo 50 °F Hi 69 °F Lo 51 °F Hi 72 °F Lo 55 °F

 

Overnight
 
 Areas of drizzle. Patchy fog. Otherwise, cloudy, with a low around 52. Calm wind.
Monday
 
 Areas of drizzle, then showers and thunderstorms likely after 9am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 72. Calm wind becoming east 5 to 8 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%.
Monday Night
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55. East wind 5 to 7 mph becoming light and variable. Winds could gust as high as 18 mph.
Tuesday
 
 A 20 percent chance of showers and thunderstorms before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 70. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.
Tuesday Night
 
 Partly cloudy, with a low around 50. Northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Wednesday
 
 A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 69. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 50%.
Wednesday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 51. Chance of precipitation is 30%.
Thursday
 
 A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 72.
Thursday Night
 
 Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 55.
Friday
 
 A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 81.
Friday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Saturday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Saturday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Sunday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 73.

 

Forecast from NOAA-NWS for Spearfish SD.