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

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Current conditions at

Ortonville, Ortonville Muncipal-Martinson Field Airport (KVVV)

Lat: 45.31°NLon: 96.42°WElev: 1099ft.

Fair

73°F

23°C

Humidity 74%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 9 Aug 11:15 am CDT
Extended Forecast for

Marvin SD

  • Today

    Today: Sunny, with a high near 80. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76. West northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60. West northwest wind around 7 mph becoming southwest after midnight.

    Low: 60 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. South southwest wind 8 to 10 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. Northwest wind 7 to 9 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. North wind around 7 mph becoming south after midnight.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. South southeast wind 8 to 11 mph, with gusts as high as 21 mph.

    High: 83 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 80. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 61. Southwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 76. West northwest wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 60. West northwest wind around 7 mph becoming southwest after midnight.
Monday
Sunny, with a high near 81. Southwest wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 63. South southwest wind 8 to 10 mph.
Tuesday
Sunny, with a high near 80. Northwest wind 7 to 9 mph.
Tuesday Night
Mostly clear, with a low around 62. North wind around 7 mph becoming south after midnight.
Wednesday
Sunny, with a high near 83. South southeast wind 8 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Sunny, with a high near 84.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 20%.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marvin SD
 45.27°N 96.91°W (Elev. 1601 ft)
Last Update:
10:45 am CDT Aug 9, 2025
Forecast Valid:
11am CDT Aug 9, 2025-6pm CDT Aug 15, 2025
 
Forecast Discussion
 
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Additional Resources

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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