National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. on Saturday

Another Pacific system will impact the West Coast today. Heavy rainfall could lead to flash flooding, river and small stream flooding as well as mudslides and debris flows, especially over burn scars. Strong winds and heavy elevation snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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Current Conditions

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Spearfish SD

7 Day Forecast

For More Weather Information:

Rapid City, SD Local Forecast Office

This
Afternoon

Mostly Sunny

Mostly
Sunny

High: 45 °F

Tonight

Partly Cloudy

Partly
Cloudy

Low: 30 °F

Sunday

Chance Rain Chance for Measurable Precipitation 50%

Chance
Rain

High: 46 °F

Sunday
Night

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

Low: 31 °F

Monday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 34 °FFalling Temperatures

Monday
Night

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

Low: 27 °F

Tuesday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 34 °F

Tuesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 21 °F

Wednesday

Mostly Sunny

Mostly
Sunny

High: 37 °F

Detailed Forecast

  • This Afternoon Mostly sunny, with a high near 45. Southwest wind around 8 mph.
  • Tonight Partly cloudy, with a low around 30. Southwest wind 8 to 10 mph.
  • Sunday A 50 percent chance of rain after 11am. Mostly cloudy, with a high near 46. Southwest wind 10 to 17 mph, with gusts as high as 24 mph.
  • Sunday Night A chance of rain before 11pm, then a chance of snow. Mostly cloudy, with a low around 31. Breezy, with a west wind 20 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 40%.
  • Monday A 40 percent chance of snow showers. Mostly cloudy, with a temperature falling to around 31 by 8am. Breezy, with a northwest wind 22 to 29 mph, with gusts as high as 40 mph.
  • Monday Night A 40 percent chance of snow showers. Mostly cloudy, with a steady temperature around 27. Northwest wind 15 to 17 mph, with gusts as high as 25 mph.
  • Tuesday A 20 percent chance of snow showers before 11am. Partly sunny, with a high near 34.
  • Tuesday Night Mostly cloudy, with a low around 21.
  • Wednesday Mostly sunny, with a high near 37.
  • Wednesday Night A 20 percent chance of snow. Mostly cloudy, with a low around 23.
  • Christmas Day A 40 percent chance of snow. Mostly cloudy, with a high near 32.
  • Thursday Night A 30 percent chance of snow. Cloudy, with a low around 20.
  • Friday A 20 percent chance of snow. Mostly cloudy, with a high near 28.