Full Breakdown
Unseasonal Snowfall Hits the Rockies
7/1/2026, 4:04:51 PM
Unseasonal Snowfall Hits the Rockies
On June 28, 2026 a winter storm entered the northern Rockies of Idaho, Montana and Wyoming, delivering snowfall to elevations above 6,500 feet. Temperatures fell 15-30 °F below normal and winds gusted over 50 mph, prompting the National Weather Service to issue winter storm warnings. June snowfall is rare; the historical average is under 0.5 inch.
Meteorology and Snow Forecasts
A trough pulled an air mass into the Rockies, dropping temperatures 15-20 °F below normal and producing wind gusts over 50 mph. Snowfall forecasts differ: Fox Weather expects up to 8 inches above 6,500 feet and up to 16 inches on the highest Anaconda-Pintler and Lemhi peaks; the NWS projects 4-8 inches for high-elevation sites, up to 12 inches; Billings reports anticipate 1-3 inches near 9,000 feet and 3-6 inches, up to 9 inches above 10,000 feet.
National Weather Service Advisories
The NWS issued winter storm warnings and winter weather advisories for elevations above 6,500 feet from Saturday evening through Monday afternoon. The agency warned of hypothermia, downed trees and blocked roads, urging travelers to delay trips or carry a kit with tire chains, clothing and water. Alerts also noted gusts over 50 mph and a slight risk of flash flooding in Glacier National Park.
Conflicting Forecasts and Data Gaps
Snowfall estimates vary: Fox Weather projects up to 16 inches on the highest peaks, the NWS forecasts 4-8 inches for high-elevation sites, up to 12 inches, and Billings outlets expect 1-3 inches near 9,000 feet and up to 9 inches above 10,000 feet. Wind gusts range from 30-55 mph to isolated 60 mph on the Beartooth Highway. Post-event measurements have not been released, leaving actual accumulations and wind impacts uncertain.
Impact on Travel and Fourth of July Plans
The storm arrived before the July 4 holiday, prompting travel advisories for routes in Yellowstone, Glacier and mountain areas. Officials warned of blocked passes, downed trees and reduced visibility, leading some operators to delay or cancel trips. Wet snow also raised avalanche concerns on slopes, while lower-elevation towns stayed warm and dry, underscoring the region’s climatic contrast.
Verbatim Quotes
"This system is expected to drop as much as 8 inches of snow above 6,500 feet, with up to 16 inches of heavy, wet accumulation targeting the highest peaks of the Anaconda-Pintler and Lemhi ranges." — Fox Weather
"Persons should consider delaying travel across the backcountry and higher elevations." — National Weather Service
"Wind speeds are likely to peak early this evening with a few gusts in excess of 50 mph causing difficult cross-winds." — National Weather Service
"There is a slight risk of excessive rainfall amounts leading to flash flooding in Glacier National Park through the night of June 28." — National Weather Service
What’s Next: Early July Outlook
The storm is expected to clear by early July, with temperatures returning to the 70-80 °F range and precipitation chances dropping to single digits. Forecast models indicate a ridge of high pressure will dominate the region, providing dry, warm conditions for the Independence Day weekend.
