For many, September begins a gradual transition from swelter to sweaters.  But, it’s straight to parkas and boots in areas of the western high country and Alaska, coated by snow this week.

High altitudes in northwest Wyoming were treated to a covering of snow this past Sunday.  The National Weather Service forecast office in Riverton, Wyoming posted pictures of the coatings at Togwotee Mountain Lodge and the summit of Grand Targhee Resort.

Montana’s Glacier National Park is next up to get some of the white stuff. Through this evening, a winter weather advisory is in effect for elevations above 6,000 for up to 6 inches of snow thanks to an “unusually strong cold front.”

Said front has produced snow in the Canadian Rockies, including near the Banff resort.

This week’s most impressive snow has occurred in northern Alaska.

In Barrow, Alaska, 4.4 inches of snow fell Tuesday, tying for the third snowiest September day on record, according to  “Tuesday was its heaviest calendar-day snow on record anytime from August through the first week of September,” added.

To the east of Barrow in the northeastern Brooks Range,  a blizzard warning is in effect today  for 5 to 10 inches of snow and winds of 35 to 50 mph.  White-out conditions are expected.

In places where snow is falling this week, it’s not all that unusual – and has fallen even farther south and at lower elevations at this time of year. In fact, today marks the date of Denver’s earliest snowfall on record.  4.2 inches were logged at Stapleton Airport on September 3, 1961.