National Weather Service United States Department of Commerce

Unseasonably cold temperatures spreading into central U.S.

A strong cold front will usher a much colder air mass into the central and eastern U.S. for the end of the work week. Temperatures will be 10 to 20 degrees below average in some areas. Rain and snow will be possible across the Great Lakes on Friday as the system crosses the area. Heavy snow is possible in the central Appalachians Friday night.
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Hazardous Weather Conditions

Current Conditions

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5 Miles SSW Lewis Lake WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

Overnight

Partly Cloudy

Partly
Cloudy

Low: 29 °F

Friday

Mostly Sunny

Mostly
Sunny

High: 53 °F

Friday
Night

Partly Cloudy

Partly
Cloudy

Low: 29 °F

Saturday

Chance Rain/Snow Chance for Measurable Precipitation 50%

Chance
Rain/Snow

High: 48 °F

Saturday
Night

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 27 °F

Sunday

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

High: 31 °F

Sunday
Night

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

Low: 18 °F

Monday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 31 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 14 °F

Detailed Forecast

  • Overnight Partly cloudy, with a low around 29. South wind 9 to 11 mph.
  • Friday Mostly sunny, with a high near 53. South wind 11 to 18 mph, with gusts as high as 25 mph.
  • Friday Night Partly cloudy, with a low around 29. South wind 13 to 15 mph, with gusts as high as 21 mph.
  • Saturday A slight chance of snow showers before noon, then a chance of rain showers. Partly sunny, with a high near 48. South wind 11 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
  • Saturday Night Snow likely. Cloudy, with a low around 27. Breezy, with a south southwest wind 9 to 14 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 70%. New snow accumulation of 3 to 5 inches possible.
  • Sunday Snow likely. Cloudy, with a high near 31. Breezy, with a south southwest wind 18 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 70%.
  • Sunday Night A 50 percent chance of snow, mainly before midnight. Cloudy, with a low around 18. West wind 3 to 6 mph.
  • Monday A 20 percent chance of snow. Partly sunny, with a high near 31.
  • Monday Night Partly cloudy, with a low around 14.
  • Tuesday A 20 percent chance of snow. Partly sunny, with a high near 33.
  • Tuesday Night A slight chance of snow. Mostly cloudy, with a low around 22.
  • Wednesday Partly sunny, with a high near 37.
  • Wednesday Night Partly cloudy, with a low around 23.
  • Thursday A slight chance of snow. Partly sunny, with a high near 43.