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 West Coast through 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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Lead SD

7 Day Forecast

For More Weather Information:

Rapid City, SD Local Forecast Office

Tonight

Partly Cloudy

Partly
Cloudy

Low: -4 °C

Sunday

Showers Likely Chance for Measurable Precipitation 60%

Showers
Likely

High: 6 °C

Sunday
Night

Rain/Snow Chance for Measurable Precipitation 80%

Rain/Snow

Low: -5 °C

Monday

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: -2 °C

Monday
Night

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

Low: -7 °C

Tuesday

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

High: -2 °C

Tuesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: -7 °C

Wednesday

Partly Sunny

Partly
Sunny

High: 2 °C

Wednesday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: -7 °C

Detailed Forecast

  • Tonight Partly cloudy, with a low around -4. Southwest wind 11 to 18 km/h.
  • Sunday Showers likely, mainly after 2pm. Mostly cloudy, with a high near 6. Southwest wind 16 to 21 km/h, with gusts as high as 29 km/h. Chance of precipitation is 60%.
  • Sunday Night Rain showers before 8pm, then rain and snow showers between 8pm and 11pm, then snow showers after 11pm. Low around -5. Blustery, with a west wind 26 to 31 km/h increasing to 34 to 39 km/h after midnight. Winds could gust as high as 55 km/h. Chance of precipitation is 80%. New snow accumulation of 3 to 5 centimeters possible.
  • Monday Snow likely. Cloudy, with a high near -2. Blustery, with a northwest wind 32 to 37 km/h, with gusts as high as 55 km/h. Chance of precipitation is 60%.
  • Monday Night Snow likely. Mostly cloudy, with a low around -7. Blustery, with a northwest wind 26 to 35 km/h, with gusts as high as 50 km/h. Chance of precipitation is 60%.
  • Tuesday A 30 percent chance of snow. Partly sunny, with a high near -2. Northwest wind 16 to 26 km/h, with gusts as high as 35 km/h.
  • Tuesday Night Mostly cloudy, with a low around -7.
  • Wednesday Partly sunny, with a high near 2.
  • Wednesday Night A 30 percent chance of snow. Mostly cloudy, with a low around -7.
  • Christmas Day A 50 percent chance of snow. Cloudy, with a high near -2.
  • Thursday Night A 40 percent chance of snow. Cloudy, with a low around -12.
  • Friday A 20 percent chance of snow. Mostly cloudy, with a high near -6.
  • Friday Night Partly cloudy, with a low around -13.
  • Saturday Mostly sunny, with a high near -2.