National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the Pacific Northwest through late Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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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

Tonight

Rain Chance for Measurable Precipitation 90%

Rain

Low: 2 °C

Monday

Chance Rain/Snow Chance for Measurable Precipitation 30%

Chance
Rain/Snow

High: 3 °C

Monday
Night

Rain/Snow Likely Chance for Measurable Precipitation 70%

Rain/Snow
Likely

Low: -1 °C

Tuesday

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

High: -1 °C

Tuesday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: -6 °C

Wednesday

Mostly Cloudy

Mostly
Cloudy

High: -2 °C

Wednesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: -7 °C

Christmas
Day

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: -1 °C

Thursday
Night

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

Low: -8 °C

Detailed Forecast

  • Tonight Rain. Low around 2. South wind 25 to 30 km/h, with gusts as high as 45 km/h. Chance of precipitation is 90%. New precipitation amounts between 1 and 2.5 mm possible.
  • Monday A chance of rain before 5pm, then a chance of rain and snow. Cloudy, with a high near 3. South southeast wind 20 to 25 km/h becoming west 10 to 15 km/h in the afternoon. Chance of precipitation is 30%.
  • Monday Night A chance of rain and snow before 7pm, then snow likely. Cloudy, with a low around -1. West northwest wind 10 to 15 km/h becoming north in the evening. Chance of precipitation is 70%. New snow accumulation of around 2 centimeters.
  • Tuesday Snow likely before noon, then areas of blowing snow and a chance of snow after noon. Cloudy, with a high near -1. Blustery, with a north northwest wind 15 to 25 km/h increasing to 25 to 35 km/h in the afternoon. Winds could gust as high as 45 km/h. Chance of precipitation is 70%. New snow accumulation of around 3 centimeters.
  • Tuesday Night A slight chance of snow before midnight. Cloudy, with a low around -6. Northwest wind 25 to 30 km/h, with gusts as high as 45 km/h. Chance of precipitation is 20%.
  • Wednesday Mostly cloudy, with a high near -2.
  • Wednesday Night Mostly cloudy, with a low around -7.
  • Christmas Day A slight chance of snow. Mostly cloudy, with a high near -1. Chance of precipitation is 20%.
  • Thursday Night A chance of snow. Mostly cloudy, with a low around -8. Chance of precipitation is 40%.
  • Friday A slight chance of snow. Mostly cloudy, with a high near -7. Chance of precipitation is 20%.
  • Friday Night Mostly cloudy, with a low around -14.
  • Saturday Partly sunny, with a high near -6.
  • Saturday Night Partly cloudy, with a low around -15.
  • Sunday Mostly sunny, with a high near -8.