While the Halloween forecast for southeast Wyoming is for mild weather, a storm system is headed our way late Sunday and the first part of next week, according to the Cheyenne Office of the National Weather Service.

The first part fo the weekend, including Halloween, doesn't look scary at all:

Relatively mild and dry weather will continue into the first half of the weekend, then a storm system arrives to begin the new week. Moisture chances increase Sunday, with rain anticipated for the plains and valleys and snow for the higher terrain.
But things will change lae this weekend:
Our next storm system is expected to arrive late Sunday and move out Tuesday morning. Several rounds of showers are expected through this time period as the system evolves and ultimately moves to our east. Most areas will see light rain while our mountain peaks and high elevations are expected to switch over to snow. The placement and timing of this system remains unusually uncertain, which influences the amounts and type of precipitation. What is certain is a cold front moves in Monday morning bringing with it a brisk northwest wind and cooler temperatures.

A graphic showing a weather map with the placement of the surface extra-tropical system over the central plains.
Cheyenne, Laramie Forecasts

Cheyenne Forecast

This Afternoon
Sunny, with a high near 63. South southeast wind 5 to 10 mph.
Tonight
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 39. South wind 5 to 10 mph.
Saturday
Partly sunny, with a high near 61. South wind around 5 mph becoming northwest in the afternoon.
Saturday Night
Partly cloudy, with a low around 37. Northwest wind around 5 mph becoming calm.
Sunday
Mostly cloudy, with a high near 57. South southwest wind 5 to 10 mph becoming southeast in the afternoon.
Sunday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 40.
Monday
A 40 percent chance of showers. Partly sunny, with a high near 51. Windy.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 34. Breezy.
Tuesday
Sunny, with a high near 56. Breezy.
Tuesday Night
Mostly clear, with a low around 33.
Wednesday
Sunny, with a high near 55.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 52.
Laramie Forecast
This Afternoon
Sunny, with a high near 58. South wind around 10 mph.
Tonight
Partly cloudy, with a low around 41. South wind around 10 mph.
Saturday
A slight chance of showers between noon and 3pm. Partly sunny, with a high near 53. South wind around 10 mph becoming west in the afternoon. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 38. West wind 5 to 10 mph becoming south after midnight.
Sunday
Mostly cloudy, with a high near 52. South wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 38. Breezy.
Monday
A chance of rain and snow showers. Mostly cloudy, with a high near 43. Windy. Chance of precipitation is 50%.
Monday Night
A chance of rain and snow showers before 9pm, then a chance of snow showers. Mostly cloudy, with a low around 32. Windy.
Tuesday
Sunny, with a high near 47. Windy.
Tuesday Night
Mostly clear, with a low around 31.
Wednesday
Sunny, with a high near 48.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 47.

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Gallery Credit: Joy Greenwald

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