By Chris Spears

DENVER (CBS4) – An unusually cold late August storm system is bringing a chilly rain and some high altitude snow to parts of Wyoming, Montana and Idaho.

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Summer snow was showing up on the Cody Bowl cam at Jackson Hole Monday morning. (credit:

The National Weather Service says as much as 4-8 inches could fall in elevations above 9,000 feet in the mountains of Montana and Wyoming.

Some areas have been placed under a Winter Weather Advisory.

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Colorado is on the extreme southern edge of this weather system and will be windy as it passes by.

Some colder air will filter into northern and northeast Colorado by Tuesday with highs dropping 20-30 degrees from Monday.

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Meteorologist Chris Spears travels weekly in the CBS4 Mobile Weather Lab reporting about Colorado’s weather and climate. Check out his bio, connect with him on Facebook or follow him on Twitter @ChrisCBS4.