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

5 Miles WNW Waubay 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. Southwest wind around 6 mph.

    Low: 69 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after 4pm.  Mostly sunny and hot, with a high near 90. South southwest wind 11 to 15 mph, with gusts as high as 26 mph.  Chance of precipitation is 20%.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 67. West wind 6 to 11 mph becoming east after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 83. East wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 63. Northeast wind 10 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 63 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A slight chance of showers before 1pm.  Mostly sunny, with a high near 76. Northeast wind 10 to 13 mph, with gusts as high as 22 mph.  Chance of precipitation is 20%.

    High: 76 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 1am.  Mostly cloudy, with a low around 60. Northeast wind 8 to 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 20%.

    Low: 60 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. East northeast wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. East northeast wind 6 to 10 mph.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 69. Southwest wind around 6 mph.
Sunday
A slight chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 90. South southwest wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 67. West wind 6 to 11 mph becoming east after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 83. East wind 7 to 11 mph, with gusts as high as 21 mph.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Northeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
A slight chance of showers before 1pm. Mostly sunny, with a high near 76. Northeast wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 60. Northeast wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 74. East northeast wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 56. East northeast wind 6 to 10 mph.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Partly sunny, with a high near 73.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 57. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Waubay SD
 45.35°N 97.4°W (Elev. 1824 ft)
2:15 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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