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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Greybull/S Big Horn Airport WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

Overnight

Mostly Cloudy

Mostly
Cloudy

Low: 17 °F

Sunday

Partly Sunny

Partly
Sunny

High: 34 °F

Sunday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 12 °F

Monday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 36 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 11 °F

Tuesday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 37 °F

Tuesday
Night

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

Low: 20 °F

Wednesday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 37 °F

Wednesday
Night

Partly Cloudy

Partly
Cloudy

Low: 15 °F

Detailed Forecast

  • Overnight Mostly cloudy, with a low around 17. Northwest wind 5 to 8 mph becoming southeast after midnight.
  • Sunday Partly sunny, with a high near 34. Light and variable wind becoming northwest 13 to 18 mph in the morning. Winds could gust as high as 25 mph.
  • Sunday Night Scattered snow showers, mainly after 11pm. Partly cloudy, with a low around 12. North northwest wind 5 to 15 mph becoming east southeast after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 30%.
  • Monday A 20 percent chance of snow showers. Partly sunny, with a high near 36. Light and variable wind becoming northwest 8 to 13 mph in the afternoon. Winds could gust as high as 20 mph.
  • Monday Night Partly cloudy, with a low around 11. North northwest wind 5 to 8 mph becoming south southeast in the evening.
  • Tuesday A 50 percent chance of snow. Mostly cloudy, with a high near 37. South southeast wind around 7 mph becoming southwest in the morning.
  • Tuesday Night A 40 percent chance of snow. Mostly cloudy, with a low around 20. East southeast wind around 6 mph.
  • Wednesday A 20 percent chance of snow. Partly sunny, with a high near 37.
  • Wednesday Night Partly cloudy, with a low around 15.
  • Thanksgiving Day Mostly sunny, with a high near 34.
  • Thursday Night Partly cloudy, with a low around 10.
  • Friday Mostly sunny, with a high near 30.
  • Friday Night Partly cloudy, with a low around 9.
  • Saturday Mostly sunny, with a high near 29.