National Weather Service United States Department of Commerce

Arctic air to drop temperatures across the northern Plain and northern Rockies; will bring snow to the Intermountain West

An arctic front is forecast to plunge through the northern Plains and northern Rockies on Saturday bringing a drastic drop in temperatures across these areas with a burst of snow over much of the Intermountain Region. Arctic air will also filter into the Pacific Northwest bringing with it snow showers and subfreezing low temperatures.
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Current Conditions

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5 Miles SW South Entrance WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

Overnight

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 26 °F

Saturday

Snow Chance for Measurable Precipitation 90%

Snow

High: 36 °FFalling Temperatures

Saturday
Night

Snow Chance for Measurable Precipitation 90%

Snow

Low: 12 °F

Sunday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 23 °F

Sunday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 1 °F

Monday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 28 °F

Monday
Night

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

Low: 23 °F

Tuesday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 33 °F

Tuesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 19 °F

Detailed Forecast

  • Overnight Snow likely, mainly after 1am. Cloudy, with a low around 26. Breezy, with a southwest wind 18 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of 2 to 4 inches possible.
  • Saturday Snow. Temperature rising to near 36 by noon, then falling to around 22 during the remainder of the day. Breezy, with a southwest wind 24 to 28 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
  • Saturday Night Snow. Low around 12. Wind chill values as low as -5. Breezy, with a southwest wind 18 to 23 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
  • Sunday A 50 percent chance of snow, mainly before 11am. Partly sunny, with a high near 23. Light and variable wind becoming south southwest around 6 mph in the afternoon. New snow accumulation of less than a half inch possible.
  • Sunday Night Mostly cloudy, with a low around 1. Calm wind becoming east southeast around 5 mph after midnight.
  • Monday A 40 percent chance of snow, mainly after 11am. Partly sunny, with a high near 28. South wind 3 to 8 mph.
  • Monday Night A 50 percent chance of snow. Mostly cloudy, with a low around 23. Southwest wind 5 to 8 mph.
  • Tuesday A 40 percent chance of snow. Mostly cloudy, with a high near 33.
  • Tuesday Night Mostly cloudy, with a low around 19.
  • Wednesday A 40 percent chance of snow. Mostly cloudy, with a high near 33.
  • Wednesday Night A chance of snow. Mostly cloudy, with a low around 24.
  • Thursday A chance of snow. Mostly cloudy, with a high near 33.
  • Thursday Night A chance of snow. Mostly cloudy, with a low around 23.
  • Friday A slight chance of snow. Mostly cloudy, with a high near 32.