Late-Season Winter Storm Brings Heavy Snow to Montana and Wyoming

A late-season winter storm is bringing significant snowfall to parts of Montana and Wyoming. Forecasters warn that some mountainous areas could experience more than a foot of snow accumulation through Thursday.

While snow at high elevations in May is not unusual, the intensity of this system highlights the persistent winter influence into late spring. Such heavy snow can disrupt travel in mountain corridors frequently used by recreational visitors. It may also impact early-season outdoor activities and local economies. Additionally, snow accumulation alongside fluctuating temperatures can lead to unstable conditions in higher terrains, raising risks like avalanches or affecting runoff later in the season.

The National Weather Service (NWS) in Billings has issued a winter storm warning for portions of southern Montana. A winter weather advisory covers areas across both states. Snowfall could reach as high as 13 inches in some locations, with gusty winds reducing visibility and creating hazardous conditions.

Montana Winter Storm Warning

A winter storm warning is in effect from 6 p.m. Wednesday to 6 p.m. MDT Thursday for the Absaroka and Beartooth Mountains, including Cooke City.

Forecasters expect heavy snow, especially on north-facing slopes above 7,000 feet. Total accumulations may range from 8 to 13 inches, with winds gusting up to 30 mph.

The NWS warns that snow could significantly impact recreation in the high country, particularly for those in mountainous terrain. Travelers should carry emergency supplies such as extra food, water, and a flashlight in case conditions worsen.

Animated weather footage from windy.com shows where the heaviest snow is expected over the next few days.

Wyoming Winter Weather Advisory

A winter weather advisory is active from 3 a.m. to 9 p.m. MDT Thursday for the Pryor/Northern Bighorn Mountains in Montana and the Northeast Bighorn Mountains in Wyoming, including areas near Burgess Junction and Story.

Snow accumulations of 5 to 10 inches are expected, with wind gusts reaching up to 30 mph. The advisory warns of difficult travel conditions, especially in the morning and evening.

Roads, including U.S. Route 14, may become slippery as snow and winds increase. Drivers should slow down and exercise caution due to rapidly changing conditions. Officials recommend checking road conditions before traveling and staying updated on forecasts.

Thunderstorms and Rain Expected

In lower elevations, thunderstorms and rain are expected across the region as a cold front passes through. The NWS in Billings notes that showers and weak thunderstorms will spread south and east as the cold front moves through. These thunderstorms could bring gusty winds, small hail, and brief downpours.

Cold Weather Hits Great Lakes Region

Meanwhile, NWS offices in the Great Lakes have issued frost advisories and freeze warnings as cold weather moves across the region. Frost advisories affect northeast Minnesota, northern Wisconsin, and northern Michigan, including the Upper Peninsula. More severe freeze warnings are also issued in Michigan.

Animated temperature footage from windy.com shows the progression of cold temperatures sweeping across the region.

Precautions During the Storm

Both alerts will expire by Thursday night. Residents and visitors in both states should consider these precautions:

• Stay informed by checking local NWS updates and state DOT road reports.
• Adjust driving habits by slowing down, as spring tires do not grip mountain slush as winter tires do.
• Pack essentials such as waterproof layers, heavy thermal gear, and an emergency cold-weather kit if heading near the backcountry.