A cold front will pass through southeast Wyoming on Saturday bringiing much coooler weather through the weekend, including the first day of fall on Sunday.

That's according to the Cheyenne Office of the National Weather Service. The agency posted the following on its website:

''Saturday will be much cooler than today as a cold front passes through the region during the early morning hours. Temperatures will be around 20 degrees cooler than Friday across the entire area. Mostly sunny skies with very gusty winds are expected during the day, but clouds begin to increase towards the evening and overnight hours.''

The cooler weather will continue into Sunday:

Much cooler temperatures will continue for Sunday across southeast Wyoming and western Nebraska. Scattered showers will be present across the region during the morning hours before tapering off. Sunny skies return for the afternoon hours. Monday will be warmer with increasing cloudiness once again. Enjoy the fall weather!

Cheyenne, Laramie Forecasts

Cheyenne Forecast     

Today
Increasing clouds, with a high near 63. Breezy, with a north wind 15 to 20 mph becoming east in the afternoon. Winds could gust as high as 30 mph.
Tonight
A 40 percent chance of showers, mainly after 3am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 39. East wind 5 to 15 mph becoming south after midnight.
Sunday
A chance of showers before noon, then a chance of sprinkles after noon. Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 56. South wind 5 to 15 mph. Chance of precipitation is 30%.
Sunday Night
Patchy frost between 3am and 4am. Otherwise, mostly clear, with a low around 36. South wind 5 to 15 mph becoming west after midnight.
Monday
Mostly sunny, with a high near 74. West wind 10 to 15 mph becoming north in the afternoon.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 40.
Tuesday
Mostly sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 76.
Laramie Forecast:
Today
Increasing clouds, with a high near 61. Breezy, with an east wind 10 to 20 mph, with gusts as high as 30 mph.
Tonight
A 20 percent chance of showers. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 35. East wind 10 to 15 mph decreasing to 5 to 10 mph after midnight.
Sunday
A chance of sprinkles and flurries before 8am, then a chance of sprinkles between 8am and noon. Patchy fog before 8am. Patchy frost between 8am and 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. South southeast wind 5 to 10 mph.
Sunday Night
Areas of frost after 2am. Otherwise, mostly clear, with a low around 35. East northeast wind 5 to 10 mph becoming southwest after midnight.
Monday
Areas of frost before 7am. Otherwise, increasing clouds, with a high near 68. Breezy, with a southwest wind 10 to 20 mph becoming northwest in the afternoon.
Monday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 37. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
Sunny, with a high near 76.
Thursday Night
Mostly clear, with a low around 42.
Friday
Sunny, with a high near 74.

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Gallery Credit: Joy Greenwald

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