Unseasonal June winter storm to bring heavy snow and winds to Montana
A strong and unseasonal winter storm is forecast to affect western and central Montana from June 20 to 22, 2025, bringing 30 to 60 cm (12 to 24 inches) of snow above 1 800 m (6 000 feet) and wind gusts up to 75.5 km/h (45 mph). The National Weather Service (NWS) advises against non-essential travel and outdoor activities due to hazardous conditions in the region.
Credit: James St. John
A powerful and unseasonal winter storm is forecast to impact parts of western and central Montana between June 20 and 22, 2025. According to the National Weather Service (NWS), heavy snow accumulations of 30 to 60 cm (12 to 24 inches) are expected above 1 800 m (6 000 feet) with accompanying winds at speeds up to 75 km/h (45 mph).
This summer snow event is being driven by a strong low-pressure system that is pulling cold Arctic air unusually far south, combining with remnants of spring moisture. Meteorologists clarified that the southward dip of the jet stream has enabled freezing temperatures to reach northern U.S. states during a period when most of the country is under a heat dome.
Hazardous travel conditions are expected throughout the affected region, especially on higher terrain routes. The NWS warns of the potential for slick roads, reduced visibility, and sudden whiteout conditions. Road crews may be underprepared given the seasonal anomaly. Avalanche risks may also be elevated on steeper slopes.
Hazardous travel conditions are expected throughout the East and West Glacier region including Babb, Logan Pass, Kiowa, Saint Mary, and Marias Pass. Other affected regions include Highwood Mountains, Big Belt, Elkhorn Mountains, Centennial Mountains, Bozeman Pass, Targhee Pass, Beaverhead County and Montana City.
Forecasters also warn of possible power outages as wet snow accumulates on trees and power lines. Outdoor recreationists, including hikers, bikers, and campers, are advised to avoid affected areas, check forecasts frequently, and carry emergency cold-weather gear.
This storm follows another unseasonal snow event last month that saw some parts of Montana receive nearly 90 cm (3 feet) of snow in late May. Montana had a similar snowstorm situation in June 2024 as well.
Residents and travelers are advised to monitor updates from the NWS and state transportation departments and delay non-essential travel in high-altitude regions.
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