National Weather Service Forecast for: Spearfish SD
Issued by: National Weather Service Rapid City, SD
Updated: 6:36 pm MST Dec 17, 2025
 
Tonight

Tonight: A chance of snow before 7pm, then a chance of snow after 3am. Mostly cloudy, with a low around 18. Wind chill values as low as -2. Very windy, with a west wind 36 to 41 mph, with gusts as high as 55 mph. Chance of precipitation is 30%.
Chance Snow
and Very
Windy

 Thursday

Thursday: A 20 percent chance of snow before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 33. Wind chill values as low as -2. Windy, with a west wind 26 to 36 mph decreasing to 13 to 23 mph. Winds could gust as high as 49 mph.
Slight Chance
Snow and
Windy then
Mostly Sunny
and Breezy
 Thursday
Night
Thursday Night: Mostly cloudy, with a temperature falling to near 27 by 8pm, then rising to around 44 during the remainder of the night. Wind chill values as low as 19. South wind 7 to 17 mph, with gusts as high as 30 mph.
Mostly Cloudy


 Friday

Friday: Rain likely after 5pm. Mostly cloudy, with a high near 55. Breezy, with a southwest wind 13 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 60%.
Breezy.
Mostly Cloudy
then Rain
Likely
 Friday
Night
Friday Night: Rain likely before 8pm, then rain and snow likely between 8pm and 9pm, then snow likely after 9pm. Mostly cloudy, with a low around 26. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Rain/Snow
Likely then
Snow Likely

 Saturday

Saturday: A 30 percent chance of snow before 11am. Mostly sunny, with a high near 38. West wind 9 to 14 mph, with gusts as high as 24 mph.
Chance Snow
then Mostly
Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 26. Southwest wind around 8 mph, with gusts as high as 17 mph.
Partly Cloudy


 Sunday

Sunday: Partly sunny, with a high near 47. South wind around 6 mph.
Partly Sunny


 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 35.
Mostly Cloudy
Lo 18 °F Hi 33 °F Lo 27 °F⇑ Hi 55 °F Lo 26 °F Hi 38 °F Lo 26 °F Hi 47 °F Lo 35 °F

High Wind Warning
Hazardous Weather Outlook
 

Tonight
 
 A chance of snow before 7pm, then a chance of snow after 3am. Mostly cloudy, with a low around 18. Wind chill values as low as -2. Very windy, with a west wind 36 to 41 mph, with gusts as high as 55 mph. Chance of precipitation is 30%.
Thursday
 
 A 20 percent chance of snow before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 33. Wind chill values as low as -2. Windy, with a west wind 26 to 36 mph decreasing to 13 to 23 mph. Winds could gust as high as 49 mph.
Thursday Night
 
 Mostly cloudy, with a temperature falling to near 27 by 8pm, then rising to around 44 during the remainder of the night. Wind chill values as low as 19. South wind 7 to 17 mph, with gusts as high as 30 mph.
Friday
 
 Rain likely after 5pm. Mostly cloudy, with a high near 55. Breezy, with a southwest wind 13 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 60%.
Friday Night
 
 Rain likely before 8pm, then rain and snow likely between 8pm and 9pm, then snow likely after 9pm. Mostly cloudy, with a low around 26. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Saturday
 
 A 30 percent chance of snow before 11am. Mostly sunny, with a high near 38. West wind 9 to 14 mph, with gusts as high as 24 mph.
Saturday Night
 
 Partly cloudy, with a low around 26. Southwest wind around 8 mph, with gusts as high as 17 mph.
Sunday
 
 Partly sunny, with a high near 47. South wind around 6 mph.
Sunday Night
 
 Mostly cloudy, with a low around 35.
Monday
 
 Mostly sunny, with a high near 57.
Monday Night
 
 Mostly cloudy, with a low around 31.
Tuesday
 
 Partly sunny, with a high near 50.
Tuesday Night
 
 Mostly cloudy, with a low around 37.
Wednesday
 
 Mostly sunny, with a high near 56.

 

Forecast from NOAA-NWS for Spearfish SD.