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Air Quality Concerns; Fire Weather; Extreme Heat; Flash Flooding

Wildfire smoke continues to result in poor air quality from the Upper Midwest into the Northeast. Dangerous heat and fire weather concerns for portions of the Four Corners region into the central Great Basin. Heavy rainfall and flash flooding possible for the Southeast through Monday. For Hawaii, gusty trade winds a drier weather could result in any fires that start to spread rapidly. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

68°F

20°C

Humidity 83%
Wind Speed S 6 mph
Barometer 30.09 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 3 Aug 8:15 pm MDT
Extended Forecast for

Spearfish SD

  • Tonight

    Tonight: Mostly clear, with a low around 62. South wind around 5 mph.

    Low: 62 °F

    Mostly Clear

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after noon. Sunny, with a high near 85. South wind 5 to 15 mph becoming east in the morning.

    High: 85 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. Southeast wind 5 to 15 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 85. Southwest wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. Northwest wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 15 mph.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87. Southwest wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64. East wind 5 to 10 mph becoming south after midnight. Winds could gust as high as 15 mph.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90. South wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 63.

    Low: 63 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 62. South wind around 5 mph.
Monday
A 50 percent chance of showers and thunderstorms after noon. Sunny, with a high near 85. South wind 5 to 15 mph becoming east in the morning.
Monday Night
Partly cloudy, with a low around 62. Southeast wind 5 to 15 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 85. Southwest wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 61. Northwest wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 15 mph.
Wednesday
Sunny, with a high near 87. Southwest wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.
Wednesday Night
Mostly clear, with a low around 64. East wind 5 to 10 mph becoming south after midnight. Winds could gust as high as 15 mph.
Thursday
Sunny, with a high near 90. South wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 63.
Friday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 75.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 71.
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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:
6:09 pm MDT Aug 3, 2025
Forecast Valid:
8pm MDT Aug 3, 2025-6pm MDT Aug 10, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation