Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, 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.

Partly Cloudy

79°F

26°C

Humidity 58%
Wind Speed S 5 mph
Barometer 29.96 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 19 Aug 5:35 pm CDT
Extended Forecast for

7 Miles NW Big Stone City SD

  • Tonight

    Tonight: A slight chance of showers after 4am.  Mostly clear, with a low around 61. South wind 5 to 7 mph.  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 84. South wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 84 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Northwest wind 5 to 8 mph becoming calm  after midnight.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny through mid morning, then becoming sunny, with a high near 82. Calm wind becoming north around 6 mph in the afternoon.

    High: 82 °F

    Becoming
    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 79. North wind 5 to 9 mph.

    High: 79 °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 80. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 80 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers, then 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

    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers after 4am. Mostly clear, with a low around 61. South wind 5 to 7 mph. Chance of precipitation is 20%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 84. 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 8 mph becoming calm after midnight.
Friday
Partly sunny through mid morning, then becoming sunny, with a high near 82. Calm wind becoming north around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 58. North northwest wind 3 to 5 mph.
Saturday
Sunny, with a high near 79. North wind 5 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 80. Calm wind becoming southeast 5 to 8 mph in the morning.
Sunday Night
A slight chance of showers, then 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
A slight chance of showers before 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
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 84.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles NW Big Stone City SD
 45.38°N 96.55°W (Elev. 965 ft)
5:36 pm CDT Aug 19, 2026
5pm CDT Aug 19, 2026-6pm CDT Aug 26, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database