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Still cold in some locations, but a warm-up is coming

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Posted at 4:51 AM, Oct 27, 2020
and last updated 2020-10-27 10:16:41-04

A HIGH WIND WARNING is in effect for the Rocky Mountain Front until Midnight.
A WINTER WEATHER ADVISORY is in effect for portions of Central and South Central Montana until noon.
An AIR STAGNATION ADVISORY has been issued for areas west of the Continental Divide through Thursday morning.

Tuesday will be partly to mostly cloudy with strong wind over the plains. Highs there will be in the 40s, and the snow will start to melt. The valleys of western Montana will be stuck in the 10s and 20s, with air quality slowly going downhill. Wednesday will be very similar with wind and warmer temperatures over the plains, little to no wind, and colder in the valleys. Thursday, the plains will warm into the 50s as the melting continues. Inversions may hang tough on Thursday in the valleys with one more colder day. A very weak front will push through the state later in the day. A couple of showers and mountain snow showers are possible, but this system could create enough of a pressure change and wind to scour out the inversions. This coming weekend will be very different than the past weekend. Highs will be much warmer in the 50s and 60s. It's Halloween on Saturday, and the weather will be great. Saturday night, it's time to "fall back" and turns the clocks back one hour as Daylight Saving Time comes to an end. The warmup will continue into early next week as temperatures could top out above 70 degrees. That's quite a swing.

Curtis Grevenitz
Chief Meteorologist