National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

Lat: 44.48°NLon: 103.78°WElev: 3898ft.

Fair

75°F

24°C

Humidity 39%
Wind Speed SE 9 mph
Barometer 30.05 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 27 Aug 9:55 pm MDT
Extended Forecast for

Spearfish SD

  • Tonight

    Tonight: A slight chance of showers between midnight and 3am. Mostly cloudy, with a low around 71. South wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 92. Light and variable wind becoming north 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 65. North wind around 5 mph becoming calm in the evening. Winds could gust as high as 16 mph.

    Low: 65 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 90. Calm wind becoming south 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 90 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62. Southwest wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 18 mph.

    Low: 62 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 88. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers between midnight and 3am. Mostly cloudy, with a low around 71. South wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Friday
A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 92. Light and variable wind becoming north 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 65. North wind around 5 mph becoming calm in the evening. Winds could gust as high as 16 mph.
Saturday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 90. Calm wind becoming south 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62. Southwest wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Sunday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 88. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Mostly sunny, with a high near 90.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Spearfish SD
 44.48°N 103.85°W (Elev. 3780 ft)
Last Update:
9:41 pm MDT Aug 27, 2026
Forecast Valid:
10pm MDT Aug 27, 2026-6pm MDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation