winterstormwarning.com

Winter Storm Warning, Montana

Severe

4 to 8 inches of snow, with 8 to 16 inches across the Anaconda Pintler Mountains. Plan for winter-like conditions in the backcountry and higher elevations.

Ended Monday, June 29, 2026.

Issued
Expires
Updated

Places in this warning

How much

Snow across the area
4 to 8 inches

Map

Map of Montana with this warning The Winter Storm Warning covers Butte-Silver Bow, Anaconda-Deer Lodge County, Deer Lodge. I-15I-90US 12US 93US 191Butte-Silver BowAnaconda-Deer Lodge CountyDeer LodgePhilipsburgIDAHOMONTANA25 mi I-15I-90US 12US 93Butte-Silver BowAnaconda-Deer Lodge CountyDeer LodgePhilipsburgIDAHOMONTANA50 mi I-15I-90US 12Butte-Silver BowDeer LodgeIDAHOMONTANA50 mi I-15I-90Butte-Silver BowDeer LodgeMONTANA50 mi
  • This warning
  • Interstates
  • US highways
Alert area: National Weather Service. Borders and highways: U.S. Census Bureau. Lakes, rivers and other countries: Natural Earth. Open this area in OpenStreetMap

Details from the National Weather Service

What
Heavy wet snow expected above 6500 feet. Total snow accumulations of 4 to 8 inches, with 8 to 16 inches across the Anaconda Pintler Mountains. Snow levels may briefly lower and could produce minor slushy accumulation at Homestake and Macdonald Pass.
Where
Georgetown Lake, backcountry and higher elevation areas.
When
Until 9 in the morning Monday.
Impacts
Plan for winter-like conditions in the backcountry and higher elevations. Cold temperatures, wind, and wet snow will elevate the risk of hypothermia. Heavy wet snow may down trees, blocking access to backcountry roadways.
Additional details
West winds 10 to 20 mph with gusts up to 30 mph.

Updates

  1. Reissued with no change to the times or amounts. June 27, 2026
  2. Replaces the Winter Storm Watch. June 26, 2026