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

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

69°F

21°C

Humidity 96%
Wind Speed E 9 G 21 mph
Barometer 29.97 in (1013.1 mb)
Dewpoint 68°F (20°C)
Visibility NA
Last update 17 Aug 1:56 am CDT
Extended Forecast for

New Effington SD

  • Overnight

    Overnight: A chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 64. North northeast wind 11 to 13 mph becoming east. Winds could gust as high as 25 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Cloudy, with a high near 76. East southeast wind 16 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 76 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 66. East southeast wind 7 to 14 mph becoming northwest after midnight. Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 77. Northwest wind 8 to 10 mph.

    High: 77 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. North wind 3 to 8 mph.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. Northeast wind 3 to 6 mph.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. East northeast wind around 6 mph becoming light and variable in the evening.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. Light south wind becoming southeast 5 to 9 mph in the morning.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61. South southeast wind around 9 mph.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 64. North northeast wind 11 to 13 mph becoming east. Winds could gust as high as 25 mph. Chance of precipitation is 30%.
Sunday
Showers and thunderstorms likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Cloudy, with a high near 76. East southeast wind 16 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 66. East southeast wind 7 to 14 mph becoming northwest after midnight. Chance of precipitation is 50%.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 77. Northwest wind 8 to 10 mph.
Monday Night
Partly cloudy, with a low around 60. North wind 3 to 8 mph.
Tuesday
Mostly sunny, with a high near 79. Northeast wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 61. East northeast wind around 6 mph becoming light and variable in the evening.
Wednesday
Sunny, with a high near 82. Light south wind becoming southeast 5 to 9 mph in the morning.
Wednesday Night
Mostly clear, with a low around 61. South southeast wind around 9 mph.
Thursday
Sunny, with a high near 83.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 30%.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New Effington SD
 45.85°N 96.92°W (Elev. 1099 ft)
Last Update:
2:46 am CDT Aug 17, 2025
Forecast Valid:
2am CDT Aug 17, 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