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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Yellowstone National Park WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

Today

Snow Chance for Measurable Precipitation 100%

Snow

High: 29 °F

Tonight

Snow Chance for Measurable Precipitation 90%

Snow

Low: 16 °F

Monday

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: 22 °F

Monday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 3 °F

Tuesday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 18 °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: 25 °F

Wednesday
Night

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 16 °F

Christmas
Day

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: 18 °F

Detailed Forecast

  • Today Snow with areas of blowing snow. High near 29. Windy, with a west southwest wind 22 to 32 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 3 to 5 inches possible.
  • Tonight Snow with areas of blowing snow before 2am, then snow likely after 2am. Low around 16. Wind chill values as low as zero. Blustery, with a west northwest wind 17 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
  • Monday Snow likely, mainly before 11am. Mostly cloudy, with a high near 22. Wind chill values as low as zero. West wind 15 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
  • Monday Night A 20 percent chance of snow. Mostly cloudy, with a low around 3. Wind chill values as low as -5. Northwest wind 5 to 9 mph becoming light after midnight.
  • Tuesday A 20 percent chance of snow. Partly sunny, with a high near 18. West wind 3 to 7 mph.
  • Tuesday Night A 20 percent chance of snow. Mostly cloudy, with a low around 12. West southwest wind around 6 mph.
  • Wednesday A 40 percent chance of snow. Mostly cloudy, with a high near 25. Southwest wind around 8 mph.
  • Wednesday Night Snow likely. Cloudy, with a low around 16. Chance of precipitation is 70%.
  • Christmas Day Snow likely. Cloudy, with a high near 18. Chance of precipitation is 60%.
  • Thursday Night A 40 percent chance of snow. Mostly cloudy, with a low around 0.
  • Friday A slight chance of snow. Mostly cloudy, with a high near 12.
  • Friday Night A slight chance of snow. Mostly cloudy, with a low around -3.
  • Saturday A slight chance of snow. Mostly cloudy, with a high near 17.