Well that escalated quickly. Nobody ever said Montana weather was boring. Some mountains in southwest Montana may get hammered this weekend with 10 to 20 inches of snow piling up by Sunday afternoon.
Warm temps leading into a sudden cold snap and many inches of snow do not bode well for most of Montana. Wet roads freezing overnight and a constant stream of snow, AND some gusty winds will create the perfect storm for terrible conditions.
Many counties in southwest Montana are expecting a decent blanket of mountain snow by Tuesday afternoon. Winter Weather Advisories are in effect for nearly a dozen counties.
Yellowstone National Park will continue to get hammered with snow and gusty winds until Saturday morning with a Winter Weather Advisory. Up to 12" of fresh snow could fall and visibility may be near zero during this time.
Fall. Winter. Fall. Winter. 'Tis the dance Montana generally does through the month of October. High elevations in southwest Montana could see up to 10 inches of fresh snow by Tuesday morning...so I guess that means we're back to winter!
The weather is going to be pretty messy in and around Yellowstone National Park on Monday. Several inches of snow is expected to fall, with up to 6" in the highest elevations surrounding the Park. Driving conditions could deteriorate quickly if you're in the area.