Cheyenne National Weather Service

Temperatures will trend cooler with a decent possibility of much-needed rainfall across the region by early next week.

This is a very strong weather system that has the potential to cause major impacts for early September in localized areas

An early winter storm has Wyoming in its sights and there's a possibility of four inches of snow in many areas Monday night into Tuesday

The warning remains in effect until 8 p.m.

Cheyenne and Laramie are currently not under any advisories or warnings, but that could change.

Snow is also in the forecast for parts of southeast Wyoming and the Nebraska panhandle Monday and Tuesday.

High Wind Warnings posted for Arlington, Elk Mountain, Wheatland, Bordeaux, Vedauwoo, Cheyenne and the Interstate 80 Summit between Laramie and Cheyenne.

"There is some uncertainty in the snowfall amounts for these areas and changes will likely be needed. Pay attention to the forecast!"

Sub-zero wind chills are also possible.

Travel conditions along Interstates 80 and 25 will be impacted.

The weather service says the mountain areas can expect ''blowing snow and reduced visibilities at times with gusts 35 to 45 mph possible."

Strong winds and mountain snow showers are expected.