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

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

70°F

21°C

Humidity 93%
Wind Speed E 8 mph
Barometer 30.00 in (1014.2 mb)
Dewpoint 68°F (20°C)
Visibility NA
Last update 16 Aug 11:56 pm CDT
Extended Forecast for

4 Miles SSW New Effington SD

  • Overnight

    Overnight: A chance of showers and thunderstorms, mainly after 4am.  Mostly cloudy, with a low around 65. East wind 7 to 13 mph.  Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Cloudy, with a high near 77. East southeast wind 14 to 16 mph, with gusts as high as 24 mph.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 77 °F

    T-storms
    Likely then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers.  Mostly cloudy, with a low around 64. East wind 8 to 11 mph becoming west northwest after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 50%.

    Low: 64 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 75. North northwest wind around 10 mph.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58. North northeast wind 5 to 8 mph.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. East wind around 6 mph.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. East northeast wind around 6 mph becoming south after midnight.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. South southeast wind 5 to 9 mph.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62. South southeast wind around 9 mph.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 65. East wind 7 to 13 mph. Chance of precipitation is 30%.
Sunday
Showers and thunderstorms likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Cloudy, with a high near 77. East southeast wind 14 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 64. East wind 8 to 11 mph becoming west northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Monday
Partly sunny, with a high near 75. North northwest wind around 10 mph.
Monday Night
Partly cloudy, with a low around 58. North northeast wind 5 to 8 mph.
Tuesday
Mostly sunny, with a high near 78. East wind around 6 mph.
Tuesday Night
Mostly clear, with a low around 60. East northeast wind around 6 mph becoming south after midnight.
Wednesday
Sunny, with a high near 82. South southeast wind 5 to 9 mph.
Wednesday Night
Mostly clear, with a low around 62. South southeast wind around 9 mph.
Thursday
Sunny, with a high near 85.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Friday
A slight chance of showers. Mostly sunny, with a high near 77. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW New Effington SD
 45.81°N 96.95°W (Elev. 1148 ft)
11:45 pm CDT Aug 16, 2025
12am CDT Aug 17, 2025-6pm CDT Aug 23, 2025
 
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Additional Resources

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