National Weather Service United States Department of Commerce

Heavy rain possible for the northern Rockies & Plains; severe storms for the Northern Plains

An unseasonably strong storm system in the northwest U.S. will bring showers and thunderstorms, with locally heavy rainfall, to the northern Rockies and northern Plains. Isolated flash floods will be possible in these areas. Some storms could become severe in parts of the Dakotas into Minnesota, with large hail and damaging winds. In addition, temperatures will be 10 to 20 degrees below average.
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Current Conditions

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Sisseton SD

7 Day Forecast

For More Weather Information:

Aberdeen, SD Local Forecast Office

Today

Heavy Rain Chance for Measurable Precipitation 70%

Heavy
Rain

High: 78 °F

Tonight

Heavy Rain Chance for Measurable Precipitation 80%

Heavy
Rain

Low: 65 °F

Sunday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 79 °F

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 54 °F

Monday

Mostly Sunny

Mostly
Sunny

High: 73 °F

Monday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 54 °F

Tuesday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 68 °F

Tuesday
Night

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

Low: 55 °F

Wednesday

Partly Sunny

Partly
Sunny

High: 70 °F

Detailed Forecast

  • Today Showers and thunderstorms likely. Some of the storms could produce heavy rainfall. Cloudy, with a high near 78. East southeast wind 9 to 18 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
  • Tonight Showers and thunderstorms, mainly before 1am. Some of the storms could produce heavy rainfall. Low around 65. East southeast wind 10 to 14 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
  • Sunday A chance of showers and thunderstorms before 7am. Partly sunny, with a high near 79. West southwest wind 10 to 13 mph. Chance of precipitation is 30%.
  • Sunday Night Partly cloudy, with a low around 54. West southwest wind around 11 mph.
  • Monday Mostly sunny, with a high near 73. West wind 10 to 13 mph.
  • Monday Night Mostly cloudy, with a low around 54.
  • Tuesday A chance of showers and thunderstorms. Mostly cloudy, with a high near 68. Chance of precipitation is 30%.
  • Tuesday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.
  • Wednesday Partly sunny, with a high near 70.
  • Wednesday Night Mostly clear, with a low around 52.
  • Thursday Sunny, with a high near 74.
  • Thursday Night Mostly clear, with a low around 55.
  • Friday Sunny, with a high near 79.