Lost Trail Pass in Idaho
© Idaho Dept. of Transportation
Snow at Lost Trail Pass in Idaho.
A taste of winter weather swept into the northern Rockies Sunday into early Monday where snow was reported in parts of Montana, Idaho, and Wyoming.

Monday morning, a light coating of snow could be seen on an Idaho DOT webcam at Lost Trail Pass.

Snow fell at elevations as low as 6,500 feet in the hills around Grangeville, Idaho, on Sunday evening.

Brundage Ski Resort near McCall, Idaho, also saw some snowfall. In Wyoming, snowflakes were spotted on a camera at Rendevous Peak near Jackson.

This snow is due to much colder air rushing into the northern Rockies from a trough of low pressure aloft (dip in the jet stream) moving across the region.

Temperatures are also much below average for the middle of July. On Monday morning, a wind chill of 21 degrees was reported at Point 6 mountain to the north of Missoula, Montana.