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

Heavy to Excessive Rainfall for the Southwest U.S.; Watching for Possible East Coast Storm

Thunderstorms and a chance for some isolated flash flooding will continue today in the Southwest U.S. before an influx of tropical moisture from Priscilla brings widespread heavy rainfall and a flash flooding threat late this week into this weekend. A coastal storm may develop off the southeast U.S. coast Friday night and drift north just off the Mid-Atlantic coast through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Ortonville, Ortonville Muncipal-Martinson Field Airport (KVVV)

Lat: 45.31°NLon: 96.42°WElev: 1099ft.

Fair

66°F

19°C

Humidity 46%
Wind Speed Calm
Barometer 30.21 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 8 Oct 6:15 pm CDT
Extended Forecast for

Marvin SD

  • Tonight

    Tonight: Mostly clear, with a low around 53. South wind 11 to 17 mph, with gusts as high as 29 mph.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 72. Breezy, with a south wind 13 to 22 mph, with gusts as high as 36 mph.

    High: 72 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48. West southwest wind 6 to 11 mph becoming northwest after midnight.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62. North wind around 10 mph, with gusts as high as 20 mph.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. North northeast wind 6 to 9 mph becoming southeast after midnight.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 66. Southeast wind 10 to 16 mph, with gusts as high as 28 mph.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers, mainly after 1am. Mostly cloudy, with a low around 55. Breezy, with a southeast wind 15 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

    Low: 55 °F

    Chance
    Showers and
    Breezy

  • Sunday

    Sunday: A chance of showers. Partly sunny, with a high near 73. Breezy, with a southeast wind 18 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.

    High: 73 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A slight chance of showers before 1am. Partly cloudy, with a low around 45. Southwest wind 14 to 17 mph becoming west northwest after midnight. Chance of precipitation is 20%.

    Low: 45 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 53. South wind 11 to 17 mph, with gusts as high as 29 mph.
Thursday
Mostly sunny, with a high near 72. Breezy, with a south wind 13 to 22 mph, with gusts as high as 36 mph.
Thursday Night
Mostly clear, with a low around 48. West southwest wind 6 to 11 mph becoming northwest after midnight.
Friday
Sunny, with a high near 62. North wind around 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 42. North northeast wind 6 to 9 mph becoming southeast after midnight.
Saturday
Mostly sunny, with a high near 66. Southeast wind 10 to 16 mph, with gusts as high as 28 mph.
Saturday Night
A chance of showers, mainly after 1am. Mostly cloudy, with a low around 55. Breezy, with a southeast wind 15 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 73. Breezy, with a southeast wind 18 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.
Sunday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 45. Southwest wind 14 to 17 mph becoming west northwest after midnight. Chance of precipitation is 20%.
Columbus Day
Mostly sunny, with a high near 60.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
A slight chance of showers. Partly sunny, with a high near 60. Chance of precipitation is 20%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.
Wednesday
A slight chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marvin SD
 45.25°N 96.91°W (Elev. 1650 ft)
Last Update:
5:56 pm CDT Oct 8, 2025
Forecast Valid:
6pm CDT Oct 8, 2025-6pm CDT Oct 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