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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9 Miles ENE Etna WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

Today

Snow Chance for Measurable Precipitation 100%

Snow

High: 38 °F

Tonight

Snow Chance for Measurable Precipitation 90%

Snow

Low: 26 °F

Monday

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: 32 °F

Monday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 12 °F

Tuesday

Partly Sunny

Partly
Sunny

High: 26 °F

Tuesday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 20 °F

Wednesday

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

High: 34 °F

Wednesday
Night

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

Low: 23 °F

Christmas
Day

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: 28 °F

Detailed Forecast

  • Today Snow with areas of blowing snow. High near 38. Windy, with a west wind 29 to 32 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 4 to 8 inches possible.
  • Tonight Snow. Low around 26. Breezy, with a southwest wind 23 to 28 mph decreasing to 17 to 22 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
  • Monday Snow likely, mainly before 11am. Cloudy, with a high near 32. West wind 13 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
  • Monday Night A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 12. Northwest wind 5 to 10 mph.
  • Tuesday Partly sunny, with a high near 26. Calm wind becoming west around 5 mph in the afternoon.
  • Tuesday Night A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 20. Light west southwest wind.
  • Wednesday A 30 percent chance of snow, mainly before 11am. Partly sunny, with a high near 34. Light south southwest wind.
  • Wednesday Night Snow likely. Cloudy, with a low around 23. Chance of precipitation is 60%.
  • Christmas Day Snow likely. Mostly cloudy, with a high near 28. Chance of precipitation is 60%.
  • Thursday Night A 50 percent chance of snow. Mostly cloudy, with a low around 11.
  • Friday A slight chance of snow. Partly sunny, with a high near 19.
  • Friday Night A slight chance of snow. Mostly cloudy, with a low around 5.
  • Saturday Partly sunny, with a high near 25.