(CNN) -
An early sample of winter with record cold temperatures and snow… yes, snow… is on its way to the Rocky Mountains.
A strong September cold front will roll out of Canada early in the week, making its way from the Dakotas to Texas on Wednesday.
This will bring a dramatic change in temperature across much of the country, as many deal with record heat during Labor Day weekend.
Nowhere will this temperature roller coaster be more pronounced than in Denver, where a 15-degree drop in the city's high temperature, from 37 degrees to 3 degrees, is expected in just 48 hours from Sunday to Tuesday.
Such a front will bring rare snow to the Rocky Mountains.
In fact, the highest elevations in the Rocky Mountains could collect more than 8 inches of snow.
This would be one of the earliest measurable snowfalls on record in the area, which generally doesn't see dust start to accumulate until October.
Frost watches and warnings are also possible with temperatures stabilizing about 4 degrees below normal in the Rocky Mountains, the plains, the Midwest, and even parts of the South.
Meanwhile, excessive heat will continue to affect the East Coast and West Coast this week and a little respite is expected in the next seven days.
Outlook for September
This next week's pattern reflects what September may bring.
The Climate Prediction Center (CPC) has published its outlook for the rest of the month.
Meteorologists predict warmer and drier than normal conditions across the west, a colder-than-normal month in the north-central plains, and a more humid-than-normal month in the south-central plains and much of the Eastern US
One of the main indicators of the ongoing heat in the west is the continuation of this summer's weak monsoon, noted the CPC.
The heat and dry conditions will only worsen the drought in the region as well.
September often brings a variety of weather conditions, including tropical activity, which peaks on September 10.
CPC states this season's hurricane outlook as the main driver of wetter-than-normal conditions in the east.
CNN meteorologist Haley Brink contributed to this story.
