Heavy Rainfall and Severe Thunderstorms in the Midwest and Ohio Valley Tuesday

Multiple rounds of severe thunderstorms appear likely Tuesday across the Midwest and Ohio Valley, with severe wind gusts in excess of 75 mph as the primary threat. Heavy to excessive rainfall may lead to considerable flash and urban flooding impacts Tuesday across portions of the Ohio Valley. A Moderate Risk (level 3 of 4) of excessive rainfall has been issued. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

64°F

18°C

Humidity 94%
Wind Speed S 7 mph
Barometer 29.99 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 11 Aug 2:55 am MDT
Extended Forecast for

Spearfish SD

  • Overnight

    Overnight: Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 91. Calm wind becoming northeast 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 91 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. North wind 5 to 9 mph becoming calm  in the evening. Winds could gust as high as 18 mph.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after noon.  Increasing clouds, with a high near 84. Calm wind becoming east 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 60%.

    High: 84 °F

    Partly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 3am, then showers likely.  Low around 58. South wind 5 to 10 mph becoming light  after midnight. Winds could gust as high as 21 mph.  Chance of precipitation is 80%.

    Low: 58 °F

    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 75. Light southeast wind becoming east 12 to 17 mph in the morning. Winds could gust as high as 29 mph.  Chance of precipitation is 70%.

    High: 75 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm.  Low around 58. Chance of precipitation is 90%.

    Low: 58 °F

    Showers

  • Friday

    Friday: A chance of showers, then showers and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 79.

    High: 79 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers.  Mostly cloudy, with a low around 56.

    Low: 56 °F

    Showers
    Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 67. Calm wind.
Tuesday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 91. Calm wind becoming northeast 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 63. North wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Wednesday
Showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 84. Calm wind becoming east 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Wednesday Night
Showers and possibly a thunderstorm before 3am, then showers likely. Low around 58. South wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 75. Light southeast wind becoming east 12 to 17 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm. Low around 58. Chance of precipitation is 90%.
Friday
A chance of showers, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 79.
Friday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 56.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 76.
Saturday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 55.
Sunday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 80.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Spearfish SD
 44.48°N 103.85°W (Elev. 3780 ft)
1:36 am MDT Aug 11, 2026
3am MDT Aug 11, 2026-6pm MDT Aug 17, 2026
 
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Additional Resources

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