Severe Weather and Heavy Rainfall from the High Plains to the Ohio Valley; Heat Continuing in the Central Plains and Southeast

A stationary front will be the focus for daily showers and thunderstorms capable of widely scattered flash flooding and severe weather from the High Plains to the Ohio Valley. Monsoonal thunderstorms could cause local flash flooding across the Southwest and the Great Basin. Dangerous heat continues across the Central Plains and Southeast. Many areas will see their hottest temperatures of the year. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

75°F

24°C

Humidity 50%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 12 Aug 8:35 am MDT
Extended Forecast for

Lead SD

  • Today

    Today: A slight chance of showers, then showers and thunderstorms likely after noon.  Mostly cloudy, with a high near 79. Light and variable wind. Winds could gust as high as 17 mph.  Chance of precipitation is 70%.

    High: 79 °F

    Slight Chance
    Showers then
    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 9pm.  Cloudy, then gradually becoming partly cloudy, with a low around 53. Light and variable wind. Winds could gust as high as 17 mph.  Chance of precipitation is 70%.

    Low: 53 °F

    T-storms
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after noon.  Partly sunny, with a high near 70. Calm wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 22 mph.  Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm.  Low around 54. Southeast wind 5 to 9 mph becoming light south  after midnight. Winds could gust as high as 24 mph.  Chance of precipitation is 90%.

    Low: 54 °F

    Showers

  • Friday

    Friday: A chance of showers, then showers and possibly a thunderstorm after noon.  High near 73. Light and variable wind becoming west around 6 mph in the morning. Winds could gust as high as 20 mph.  Chance of precipitation is 80%.

    High: 73 °F

    Chance
    Showers then
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 52. North wind around 5 mph becoming calm  in the evening. Winds could gust as high as 16 mph.

    Low: 52 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Showers likely, then showers and possibly a thunderstorm after noon.  High near 68. Chance of precipitation is 90%.

    High: 68 °F

    Showers
    Likely then
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm.  Partly cloudy, with a low around 51.

    Low: 51 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, then showers and possibly a thunderstorm after noon.  Mostly sunny, with a high near 73.

    High: 73 °F

    Showers

Detailed Forecast

Today
A slight chance of showers, then showers and thunderstorms likely after noon. Mostly cloudy, with a high near 79. Light and variable wind. Winds could gust as high as 17 mph. Chance of precipitation is 70%.
Tonight
Showers and thunderstorms likely, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 53. Light and variable wind. Winds could gust as high as 17 mph. Chance of precipitation is 70%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 70. Calm wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm. Low around 54. Southeast wind 5 to 9 mph becoming light south after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%.
Friday
A chance of showers, then showers and possibly a thunderstorm after noon. High near 73. Light and variable wind becoming west around 6 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52. North wind around 5 mph becoming calm in the evening. Winds could gust as high as 16 mph.
Saturday
Showers likely, then showers and possibly a thunderstorm after noon. High near 68. Chance of precipitation is 90%.
Saturday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 51.
Sunday
A chance of showers, then showers and possibly a thunderstorm after noon. Mostly sunny, with a high near 73.
Sunday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 53.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 55.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Lead SD
 44.35°N 103.77°W (Elev. 5322 ft)
8:02 am MDT Aug 12, 2026
8am MDT Aug 12, 2026-6pm MDT Aug 18, 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