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 Pacific Northwest through late 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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3 Miles NNW Yellowstone National Park WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

This
Afternoon

Snow Chance for Measurable Precipitation 90%

Snow

High: 25 °F

Tonight

Snow Chance for Measurable Precipitation 90%

Snow

Low: 16 °F

Monday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 23 °F

Monday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 2 °F

Tuesday

Snow Chance for Measurable Precipitation 20%

Snow

High: 20 °F

Tuesday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 12 °F

Wednesday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 26 °F

Wednesday
Night

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 15 °F

Christmas
Day

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

High: 20 °F

Detailed Forecast

  • This Afternoon Snow. Steady temperature around 25. Breezy, with a west wind around 26 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 3 to 5 inches possible.
  • Tonight Snow with areas of blowing snow before 11pm, then snow likely with areas of blowing snow after 11pm. Low around 16. Blustery, with a west northwest wind 15 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
  • Monday A 50 percent chance of snow. Mostly cloudy, with a high near 23. West wind 9 to 15 mph becoming north in the afternoon. Winds could gust as high as 23 mph. New snow accumulation of 1 to 3 inches possible.
  • Monday Night A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 2. Northwest wind 5 to 8 mph becoming calm after midnight.
  • Tuesday Occasional flurries before 11am, then a slight chance of snow showers. Partly sunny, with a high near 20. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
  • Tuesday Night A 20 percent chance of snow showers. Mostly cloudy, with a low around 12. Light west southwest wind.
  • Wednesday A 40 percent chance of snow. Mostly cloudy, with a high near 26. Southwest wind around 6 mph.
  • Wednesday Night Snow likely. Cloudy, with a low around 15. Chance of precipitation is 70%.
  • Christmas Day Snow likely. Cloudy, with a high near 20. Chance of precipitation is 70%.
  • Thursday Night A 40 percent chance of snow. Mostly cloudy, with a low around 2.
  • Friday A slight chance of snow. Partly sunny, with a high near 15.
  • Friday Night A slight chance of snow. Mostly cloudy, with a low around -2.
  • Saturday A slight chance of snow. Partly sunny, with a high near 24.