Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Ortonville, Ortonville Muncipal-Martinson Field Airport (KVVV)

Lat: 45.31°NLon: 96.42°WElev: 1099ft.

Fair

66°F

19°C

Humidity 88%
Wind Speed S 3 mph
Barometer 29.97 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 19 Aug 10:35 pm CDT
Extended Forecast for

Big Stone City SD

  • Tonight

    Tonight: A slight chance of showers after 4am.  Mostly clear, with a low around 61. Calm wind becoming south 5 to 7 mph after midnight.  Chance of precipitation is 20%.

    Low: 61 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 81. South wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 81 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Northwest wind 5 to 7 mph becoming calm  after midnight.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 79. North wind 3 to 7 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. North northwest wind 3 to 5 mph.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 77. North wind 6 to 9 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54. North wind around 5 mph becoming calm  in the evening.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 77. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 77 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 59. South southeast wind around 7 mph.  Chance of precipitation is 30%.

    Low: 59 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers after 4am. Mostly clear, with a low around 61. Calm wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 20%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 81. South wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.
Thursday Night
Mostly clear, with a low around 58. Northwest wind 5 to 7 mph becoming calm after midnight.
Friday
Sunny, with a high near 79. North wind 3 to 7 mph.
Friday Night
Mostly clear, with a low around 58. North northwest wind 3 to 5 mph.
Saturday
Sunny, with a high near 77. North wind 6 to 9 mph.
Saturday Night
Partly cloudy, with a low around 54. North wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 77. Calm wind becoming southeast 5 to 7 mph in the morning.
Sunday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 59. South southeast wind around 7 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 81.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Big Stone City SD
 45.3°N 96.46°W (Elev. 971 ft)
10:36 pm CDT Aug 19, 2026
10pm CDT Aug 19, 2026-6pm CDT Aug 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

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