National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Current conditions at

Ortonville, Ortonville Muncipal-Martinson Field Airport (KVVV)

Lat: 45.31°NLon: 96.42°WElev: 1099ft.

Fair

75°F

24°C

Humidity 94%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 16 Aug 8:35 pm CDT
Extended Forecast for

Big Stone City SD

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly between 3am and 5am. Mostly cloudy, with a low around 68. Calm wind becoming east 5 to 9 mph after midnight. Chance of precipitation is 30%.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly between 7am and 9am. Mostly cloudy, with a high near 80. East wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    T-storms
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely before 1am, then a slight chance of showers. Mostly cloudy, with a low around 66. East southeast wind 6 to 9 mph becoming west after midnight. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 66 °F

    T-storms
    Likely then
    Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 77. Northwest wind 6 to 8 mph.

    High: 77 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. North wind around 6 mph becoming calm in the evening.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. Light and variable wind.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. Calm wind becoming south southeast around 6 mph in the afternoon.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 62. South southeast wind around 6 mph.

    Low: 62 °F

    Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms, mainly between 3am and 5am. Mostly cloudy, with a low around 68. Calm wind becoming east 5 to 9 mph after midnight. Chance of precipitation is 30%.
Sunday
Showers and thunderstorms likely, mainly between 7am and 9am. Mostly cloudy, with a high near 80. East wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and thunderstorms likely before 1am, then a slight chance of showers. Mostly cloudy, with a low around 66. East southeast wind 6 to 9 mph becoming west after midnight. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Partly sunny, with a high near 77. Northwest wind 6 to 8 mph.
Monday Night
Partly cloudy, with a low around 60. North wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 78. Calm wind becoming northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 61. Light and variable wind.
Wednesday
Sunny, with a high near 81. Calm wind becoming south southeast around 6 mph in the afternoon.
Wednesday Night
Clear, with a low around 62. South southeast wind around 6 mph.
Thursday
Sunny, with a high near 85.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Friday
A slight chance of showers. Mostly sunny, with a high near 78. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Big Stone City SD
 45.3°N 96.49°W (Elev. 1099 ft)
Last Update:
7:45 pm CDT Aug 16, 2025
Forecast Valid:
8pm CDT Aug 16, 2025-6pm CDT Aug 23, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation