Mountain snow is returning to the Northern Rockies from late Saturday through Monday morning, primarily impacting elevations 4000 feet and above. The heaviest accumulations are expected near the Divide in southwest Montana. Valley locations below 4000 feet may also see light snow but significant impact is not anticipated at the lower elevations. Drivers traversing mountain passes and backcountry roads will see highly variable conditions rapidly transition from slushy to snow-covered, especially during overnight and morning hours. Backcountry recreationists should prepare for cold, wet, and windy conditions that will significantly increase the risk of hypothermia.