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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Current Conditions

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Keystone CO

7 Day Forecast

For More Weather Information:

Denver-Boulder, CO Local Forecast Office

Late
Afternoon

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 21 °F

Tonight

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 14 °F

Sunday

Snow Chance for Measurable Precipitation 100%

Snow

High: 33 °F

Sunday
Night

Heavy Snow Chance for Measurable Precipitation 100%

Heavy
Snow

Low: 20 °F

Monday

Snow Chance for Measurable Precipitation 100%

Snow

High: 28 °F

Monday
Night

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 9 °F

Tuesday

Blustery

Blustery

High: 20 °F

Tuesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 9 °F

Wednesday

Mostly Sunny

Mostly
Sunny

High: 29 °F

Detailed Forecast

  • Late Afternoon A 40 percent chance of snow. Cloudy, with a steady temperature around 21. West wind around 7 mph. Total daytime snow accumulation of less than a half inch possible.
  • Tonight Snow likely, mainly after 9pm. Cloudy, with a low around 14. Wind chill values as low as zero. West wind 7 to 11 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
  • Sunday Snow. High near 33. Wind chill values as low as zero. Breezy, with a west wind 13 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
  • Sunday Night Snow with widespread blowing snow. The snow could be heavy at times. Low around 20. Breezy, with a west wind around 24 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.
  • Monday Snow with areas of blowing snow before 11am, then snow likely after 11am. High near 28. Windy, with a west northwest wind 20 to 25 mph decreasing to 13 to 18 mph in the morning. Winds could gust as high as 43 mph. Chance of precipitation is 100%.
  • Monday Night Snow likely, mainly before 11pm. Cloudy, with a low around 9. Chance of precipitation is 70%.
  • Tuesday Mostly sunny, with a high near 20. Blustery.
  • Tuesday Night Mostly cloudy, with a low around 9.
  • Wednesday Mostly sunny, with a high near 29.
  • Wednesday Night Mostly cloudy, with a low around 14.
  • Christmas Day A chance of snow. Mostly cloudy, with a high near 29.
  • Thursday Night A chance of snow. Mostly cloudy, with a low around 4.
  • Friday A slight chance of snow. Partly sunny, with a high near 18.
  • Friday Night Partly cloudy, with a low around -3.
  • Saturday Mostly sunny, with a high near 23.