Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

Current conditions at

Sisseton, Sisseton Municipal Airport (K8D3)

Lat: 45.67°NLon: 96.99°WElev: 1161ft.

75°F

24°C

Humidity 94%
Wind Speed SE 10 mph
Barometer 29.82 in (1007.4 mb)
Dewpoint 73°F (23°C)
Visibility NA
Last update 27 Jul 1:56 am CDT
Extended Forecast for

6 Miles S New Effington SD

Heat Advisory July 27, 01:00pm until July 27, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Overnight

    Overnight: Mostly cloudy, with a low around 69. South southeast wind around 8 mph becoming southwest.

    Low: 69 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 92. Heat index values as high as 101. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 92 °F

    Hot

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms between 8pm and 10pm.  Partly cloudy, with a low around 67. Northwest wind 6 to 11 mph becoming east after midnight.  Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84. Northeast wind 7 to 11 mph.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 62. Northeast wind 7 to 13 mph.  Chance of precipitation is 50%.

    Low: 62 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers before 1pm.  Mostly sunny, with a high near 79. Northeast wind 7 to 10 mph.  Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 1am.  Mostly cloudy, with a low around 60. North northeast wind 6 to 10 mph.  Chance of precipitation is 20%.

    Low: 60 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77. Northeast wind 6 to 10 mph.

    High: 77 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. Northeast wind 5 to 10 mph becoming light  after midnight.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 69. South southeast wind around 8 mph becoming southwest.
Sunday
Mostly sunny and hot, with a high near 92. Heat index values as high as 101. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Sunday Night
A slight chance of showers and thunderstorms between 8pm and 10pm. Partly cloudy, with a low around 67. Northwest wind 6 to 11 mph becoming east after midnight. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 84. Northeast wind 7 to 11 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Northeast wind 7 to 13 mph. Chance of precipitation is 50%.
Tuesday
A slight chance of showers before 1pm. Mostly sunny, with a high near 79. Northeast wind 7 to 10 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 60. North northeast wind 6 to 10 mph. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 77. Northeast wind 6 to 10 mph.
Wednesday Night
Mostly clear, with a low around 56. Northeast wind 5 to 10 mph becoming light after midnight.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 57.
Saturday
A slight chance of showers. Partly sunny, with a high near 75. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles S New Effington SD
 45.76°N 96.95°W (Elev. 1152 ft)
2:00 am CDT Jul 27, 2025
2am CDT Jul 27, 2025-6pm CDT Aug 2, 2025
 
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Additional Resources

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