US-12 between Junction Interstate 90 at Garrison and Helena including MacDonald Pass

Road Conditions:

Road conditions as of 9:30 AM MST on Monday, December 18 are as follows: scattered snow and ice and falling snow with the following exceptions - blowing and drifting snow between 4 miles west and 7 miles east of MacDonald Pass and dry between 7 miles east of MacDonald Pass and Junction Interstate 15 and US 287 South-Helena. Actual road conditions may vary from this report. Motorists are cautioned to be alert to changing conditions.


The forecast until 3:00 PM MST on Monday, December 18: Skies will be mostly cloudy becoming partly clear. Visibility will be ten miles changing to two miles. There will be scattered light snow. Winds will be 7 mph gusting to 25 mph from the west changing to 15 mph gusting to 33 mph from the west. Temperatures will range from 27 to 37 F.