Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Ortonville, Ortonville Muncipal-Martinson Field Airport (KVVV)

Lat: 45.31°NLon: 96.42°WElev: 1099ft.

Fair

75°F

24°C

Humidity 50%
Wind Speed NW 6 mph
Barometer 30.12 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 27 Aug 3:35 pm CDT
Extended Forecast for

Big Stone City SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 78. North northwest wind around 8 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 52. Light and variable wind.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers after 5pm.  Increasing clouds, with a high near 81. Light east southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 21 mph.  Chance of precipitation is 10%.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am.  Increasing clouds, with a low around 63. South wind 9 to 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A chance of showers before 7am.  Mostly sunny, with a high near 82. South southeast wind 7 to 9 mph.  Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 65. East wind 3 to 6 mph.

    Low: 65 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 83. Light and variable wind becoming east southeast 5 to 8 mph in the morning.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 64. East wind around 6 mph becoming west after midnight.  Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 82. Northwest wind 5 to 9 mph.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 78. North northwest wind around 8 mph.
Tonight
Mostly clear, with a low around 52. Light and variable wind.
Friday
A slight chance of showers after 5pm. Increasing clouds, with a high near 81. Light east southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 10%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 63. South wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers before 7am. Mostly sunny, with a high near 82. South southeast wind 7 to 9 mph. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 65. East wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 83. Light and variable wind becoming east southeast 5 to 8 mph in the morning.
Sunday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 64. East wind around 6 mph becoming west after midnight. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 82. Northwest wind 5 to 9 mph.
Monday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 60. Chance of precipitation is 30%.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Big Stone City SD
 45.3°N 96.46°W (Elev. 971 ft)
3:06 pm CDT Aug 27, 2026
3pm CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database