National Weather Service United States Department of Commerce

Heavy snow forecast for parts of Upper Midwest and western Great Lakes

A cold air mass behind a cold front will bring below-normal temperatures across much of the eastern and northern U.S. on Wednesday and allow for snow, heavy at times, to develop across parts of the Upper Midwest and western Great Lakes, mainly from central Minnesota to northern Michigan. Winter Storm Warnings and Winter Weather Advisories are in effect across the region.
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Current Conditions

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5 Miles SSW Lewis Lake WY

7 Day Forecast

Riverton, WY

NWS Weather Forecast Office

Today

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 35 °F

Tonight

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 19 °F

Thursday

Mostly Cloudy

Mostly
Cloudy

High: 43 °F

Thursday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 24 °F

Friday

Chance Rain/Snow Chance for Measurable Precipitation 50%

Chance
Rain/Snow

High: 46 °F

Friday
Night

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

Low: 23 °F

Saturday

Mostly Sunny

Mostly
Sunny

High: 46 °F

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 26 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 50 °F

Detailed Forecast

  • Today Scattered snow showers, mainly before 5pm. Partly sunny, with a high near 35. West southwest wind 7 to 10 mph. Chance of precipitation is 40%. Total daytime snow accumulation of less than a half inch possible.
  • Tonight A 20 percent chance of snow showers before 3am. Mostly cloudy, with a low around 19. West wind 7 to 9 mph becoming south in the evening.
  • Thursday Mostly cloudy, with a high near 43. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.
  • Thursday Night A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 24. South southeast wind 9 to 11 mph.
  • Friday A chance of snow showers before noon, then a chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a high near 46. South wind 9 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.
  • Friday Night A chance of rain and snow showers before midnight, then a slight chance of snow showers. Some thunder is also possible. Partly cloudy, with a low around 23. South southwest wind 8 to 11 mph. Chance of precipitation is 40%.
  • Saturday Mostly sunny, with a high near 46. South southwest wind around 9 mph.
  • Saturday Night Mostly clear, with a low around 26.
  • Sunday Mostly sunny, with a high near 50.
  • Sunday Night Partly cloudy, with a low around 27.
  • Monday A chance of rain and snow showers. Some thunder is also possible. Partly sunny, with a high near 51.
  • Monday Night A chance of rain and snow showers. Mostly cloudy, with a low around 29.
  • Tuesday A chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a high near 50.

 

Additional Forecasts and Information

Zone Area Forecast for Yellowstone National Park, WY