National Weather Service United States Department of Commerce

Arctic air to drop temperatures across the northern Plain and northern Rockies; will bring snow to the Intermountain West

An arctic front is forecast to plunge through the northern Plains and northern Rockies on Saturday bringing a drastic drop in temperatures across these areas with a burst of snow over much of the Intermountain Region. Arctic air will also filter into the Pacific Northwest bringing with it snow showers and subfreezing low temperatures.
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Current Conditions

Rapid City

Zone Forecast

  • Tonight Partly cloudy. Lows in the upper 30s. West winds 5 to 10 mph with gusts to around 20 mph increasing to 10 to 20 mph with gusts to around 30 mph after midnight.
  • Saturday Partly cloudy. A 20 percent chance of rain in the afternoon. Highs in the mid 50s. West winds 15 to 20 mph with gusts to around 30 mph.
  • Saturday Night Breezy. Mostly cloudy. Chance of snow... Possibly mixed with rain in the evening...then chance of snow after midnight. Lows around 9. North winds 15 to 25 mph with gusts to around 40 mph. Chance of precipitation 40 percent. Lowest wind chill readings 5 below to 15 below zero after midnight.
  • Sunday Breezy. Mostly cloudy in the morning then becoming partly cloudy. A 40 percent chance of snow. Highs around 16. North winds 20 to 30 mph with gusts to around 40 mph decreasing to 10 to 15 mph with gusts to around 25 mph in the afternoon. Wind chill readings 5 below to 15 below zero.
  • Sunday Night Mostly clear. Lows around 4. Northwest winds 5 to 10 mph shifting to the southwest after midnight. Wind chill readings 10 below to zero.
  • Monday Mostly sunny. Highs around 30.
  • Monday Night Partly cloudy. Lows in the upper 20s.
  • Tuesday Partly cloudy. Highs in the mid 40s.
  • Tuesday Night Partly cloudy. Lows in the lower 20s.
  • Wednesday Partly cloudy. Highs in the mid 30s.
  • Wednesday Night Partly cloudy. Lows in the mid 20s.
  • Thursday Partly cloudy. Highs in the mid 40s.
  • Thursday Night Mostly clear. Lows in the mid 20s.
  • Friday Mostly sunny in the morning then becoming partly cloudy. Highs in the mid 40s.