The Cheyenne Office of the National Weather Service has issued a Winter Storm Watch for the Sierra Madre and Snowy Range mountains of southeast Wyoming.

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The agency says up to 20 inches of snow is expected, causing poor visibility and impacting travel conditions:

Winter Storm Watch in effect for the higher mountains of southeast Wyoming. Accumulating snow is also expected across the high valleys and high plains near Interstate 25 Tuesday and Wednesday. Travel impacts are possible even with light accumulations.

Cheyenne, Laramie Forecast

Cheyenne Forecast

Today
Sunny, with a high near 41. Southwest wind around 10 mph.
Tonight
A chance of flurries after 5am. Increasing clouds, with a low around 23. West southwest wind 5 to 10 mph.
Tuesday
A chance of sprinkles and flurries before 11am, then a slight chance of snow showers between 11am and noon, then a chance of rain and snow showers after noon. Mostly cloudy, with a high near 45. West southwest wind around 10 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of rain and snow showers before 8pm, then a chance of snow showers. Mostly cloudy, with a low around 24. West wind 10 to 15 mph. Chance of precipitation is 40%.
Wednesday
A 40 percent chance of snow showers. Partly sunny, with a high near 34. North wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
A 20 percent chance of snow before 11pm. Partly cloudy, with a low around 14.
Thanksgiving Day
Sunny, with a high near 37.
Thursday Night
Mostly clear, with a low around 13.
Friday
Sunny, with a high near 40. Breezy.
Friday Night
Partly cloudy, with a low around 14.
Saturday
Mostly sunny, with a high near 33.
Saturday Night
Partly cloudy, with a low around 12.
Sunday
Sunny, with a high near 38.
Laramie Forecast
Today
Sunny, with a high near 38. West southwest wind 10 to 15 mph.
Tonight
Mostly cloudy, with a low around 22. Southwest wind around 10 mph.
Tuesday
A 40 percent chance of snow showers, mainly after 11am. Mostly cloudy, with a high near 40. West southwest wind 10 to 15 mph.
Tuesday Night
Snow showers likely. Mostly cloudy, with a low around 23. West wind 10 to 15 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 31. North northwest wind 10 to 15 mph.
Wednesday Night
A 20 percent chance of snow before 11pm. Partly cloudy, with a low around 10.
Thanksgiving Day
Sunny, with a high near 30.
Thursday Night
Mostly clear, with a low around 9.
Friday
Sunny, with a high near 34. Breezy.
Friday Night
Partly cloudy, with a low around 13.
Saturday
Mostly sunny, with a high near 30.
Saturday Night
Partly cloudy, with a low around 9.
Sunday
Sunny, with a high near 34.

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