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

San Juan County

Zone Forecast

  • Rest Of Tonight Very windy. Mostly cloudy. A chance of rain in the evening...then snow likely after midnight. New snow accumulation of 1 to 2 inches. Lows in the mid to upper 20s. North wind 20 to 30 mph with gusts to 40 mph becoming northeast 20 to 35 mph with gusts to 50 mph after midnight.
  • Saturday Windy. Mostly sunny. Highs in the mid 20s to lower 30s. Northeast wind 15 to 30 mph with gusts to 40 mph.
  • Saturday Night Breezy...clear. Lows in the lower to mid 20s. Northeast wind 15 to 25 mph decreasing to 10 to 15 mph after midnight.
  • Sunday Sunny. Highs in the lower to mid 30s. Northeast wind to 10 mph.
  • Sunday Night Partly cloudy. Lows near 30. Northeast wind 10 to 15 mph decreasing to 10 mph or less after midnight.
  • Monday Sunny. Highs in the upper 30s.
  • Monday Night Partly cloudy. Lows in the lower to mid 30s.
  • Tuesday Mostly sunny. Highs in the lower 40s.
  • Tuesday Night Mostly cloudy. Lows in the mid to upper 30s.
  • Wednesday Mostly cloudy with a chance of rain. Highs in the lower to mid 40s.
  • Wednesday Night Mostly cloudy with a chance of rain. Lows near 40.
  • Thursday Mostly cloudy with a chance of rain. Highs in the lower to mid 40s.
  • Thursday Night Mostly cloudy with a chance of rain. Lows in the upper 30s.
  • Friday Mostly cloudy with a chance of rain. Highs in the lower to mid 40s.