National Weather Service United States Department of Commerce

Developing storm will spread rain across eastern U.S.; thunderstorms in the Southeast

A storm system developing in the South will move up the Mississippi River Valley on Sunday bringing rainfall to much of the eastern U.S., along with thunderstorms in the southeastern states. Some of the thunderstorms in the Southeast could produce large hail, damaging wind and heavy rain.
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Hazardous Weather Conditions

Current Conditions

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Yellowstone National Park WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

Tonight

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 10 °F

Sunday

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

High: 20 °F

Sunday
Night

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 11 °F

Monday

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: 22 °F

Monday
Night

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

Low: 9 °F

Tuesday

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

High: 27 °F

Tuesday
Night

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 23 °F

Wednesday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 31 °F

Wednesday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 15 °F

Detailed Forecast

  • Tonight Snow showers likely, mainly after 2am. Increasing clouds, with a low around 10. Wind chill values as low as -10. Breezy, with a west wind 6 to 11 mph increasing to 18 to 23 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of 1 to 3 inches possible.
  • Sunday Snow showers likely, mainly before 11am. Cloudy, with a high near 20. Wind chill values as low as -10. Breezy, with a west wind 20 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
  • Sunday Night Snow showers likely. Cloudy, with a low around 11. Wind chill values as low as -5. West wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
  • Monday Snow showers likely, mainly before 11am. Mostly cloudy, with a high near 22. Wind chill values as low as -5. West wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
  • Monday Night A 50 percent chance of snow showers. Mostly cloudy, with a low around 9. Southwest wind around 14 mph, with gusts as high as 21 mph. New snow accumulation of around an inch possible.
  • Tuesday Snow likely. Cloudy, with a high near 27. West wind around 9 mph. Chance of precipitation is 70%.
  • Tuesday Night Snow likely, mainly before 11pm. Mostly cloudy, with a low around 23. West southwest wind around 10 mph. Chance of precipitation is 70%.
  • Wednesday A 40 percent chance of snow. Mostly cloudy, with a high near 31.
  • Wednesday Night A 20 percent chance of snow. Mostly cloudy, with a low around 15.
  • Thanksgiving Day Partly sunny, with a high near 28.
  • Thursday Night Partly cloudy, with a low around 9.
  • Friday Partly sunny, with a high near 27.
  • Friday Night A slight chance of snow. Partly cloudy, with a low around 8.
  • Saturday A slight chance of snow. Partly sunny, with a high near 26.