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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Hazardous Weather Conditions

Current Conditions

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Sioux Falls SD

7 Day Forecast

For More Weather Information:

Sioux Falls, SD Local Forecast Office

This
Afternoon

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

High: 29 °C

Tonight

Scattered Thunderstorms Chance for Measurable Precipitation 30%

Scattered
Thunderstorms

Low: 19 °C

Sunday

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

High: 28 °C

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 14 °C

Monday

Partly Sunny

Partly
Sunny

High: 25 °C

Monday
Night

Thunderstorms Likely Chance for Measurable Precipitation 70%

Thunderstorms
Likely

Low: 16 °C

Tuesday

Thunderstorms Likely Chance for Measurable Precipitation 70%

Thunderstorms
Likely

High: 22 °C

Tuesday
Night

Thunderstorms Likely Chance for Measurable Precipitation 60%

Thunderstorms
Likely

Low: 14 °C

Wednesday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 22 °C

Detailed Forecast

  • This Afternoon Isolated showers and thunderstorms. Partly sunny, with a high near 29. Southeast wind around 25 km/h. Chance of precipitation is 20%.
  • Tonight Scattered showers and thunderstorms, mainly between 10pm and 4am. Mostly cloudy, with a low around 19. Southeast wind 15 to 20 km/h decreasing to 10 to 15 km/h after midnight. Chance of precipitation is 30%.
  • Sunday Isolated showers and thunderstorms before 8am, then isolated showers and thunderstorms after 3pm. Mostly sunny, with a high near 28. South wind 10 to 15 km/h becoming west in the afternoon. Chance of precipitation is 20%.
  • Sunday Night Partly cloudy, with a low around 14. West northwest wind 10 to 15 km/h.
  • Monday Partly sunny, with a high near 25. North wind 5 to 10 km/h.
  • Monday Night Showers and thunderstorms likely. Mostly cloudy, with a low around 16. Chance of precipitation is 70%.
  • Tuesday Showers and thunderstorms likely. Cloudy, with a high near 22. Chance of precipitation is 70%.
  • Tuesday Night Showers and thunderstorms likely. Cloudy, with a low around 14. Chance of precipitation is 60%.
  • Wednesday A chance of showers and thunderstorms. Mostly cloudy, with a high near 22. Chance of precipitation is 30%.
  • Wednesday Night Partly cloudy, with a low around 12.
  • Thursday Mostly sunny, with a high near 23.
  • Thursday Night Mostly clear, with a low around 13.
  • Friday Sunny, with a high near 25.