Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

77°F

25°C

Humidity 34%
Wind Speed S 14 mph
Barometer 29.92 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 4 Sep 11:15 pm MDT
Extended Forecast for

7 Miles SSW Lead SD

  • Tonight

    Tonight: Mostly clear, with a low around 59. Southwest wind 3 to 5 mph. Winds could gust as high as 18 mph.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 84. Light southwest wind. Winds could gust as high as 16 mph.

    High: 84 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58. Light southwest wind. Winds could gust as high as 15 mph.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 82. Light and variable wind. Winds could gust as high as 16 mph.

    High: 82 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 58. Southeast wind around 6 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 58 °F

    Chance
    T-storms

  • Labor Day

    Labor Day: Partly sunny, with a high near 76. Southwest wind 5 to 10 mph, with gusts as high as 30 mph.

    High: 76 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 59. Southwest wind 3 to 5 mph. Winds could gust as high as 18 mph.
Saturday
Increasing clouds, with a high near 84. Light southwest wind. Winds could gust as high as 16 mph.
Saturday Night
Partly cloudy, with a low around 58. Light southwest wind. Winds could gust as high as 15 mph.
Sunday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82. Light and variable wind. Winds could gust as high as 16 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Southeast wind around 6 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Labor Day
Partly sunny, with a high near 76. Southwest wind 5 to 10 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Sunny, with a high near 69.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 73.
Thursday Night
Partly cloudy, with a low around 50.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 73.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSW Lead SD
 44.26°N 103.86°W (Elev. 5797 ft)
8:06 pm MDT Sep 4, 2026
11pm MDT Sep 4, 2026-6pm MDT Sep 11, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database