Severe Weather in the Central Plains; Fire Concerns in the Southern High Plains and Southwest; Late-Season Mountain Snow

Severe storms, including large hail, wind, and perhaps a couple of tornadoes, are possible in the central Plains. Dry, windy conditions and lightning from dry thunderstorms may produce hazardous fire conditions in the Southwest and southern High Plains. Late-season snow is expected in the Northwest and the Great Basin. Heat is spreading across the eastern U.S.. Read More >

Click a location below for detailed forecast.

Last Map Update: Sat, May 16, 2026 at 7:20:21 am MDT

Watches, Warnings & Advisories

Zoom Out

National Weather Service Great Falls, MT

Winter Weather Advisory

Wind Advisory

Freeze Watch

Widespread Valley Frost Sunday Through Tuesday

Mountain Snow Returns This Weekend

🌱 Gardeners and growers, it's time to prep! A widespread valley frost is on the way for Western Montana and North Central Idaho. Expect morning lows to dip into the mid-20s and low-30s from Sunday through Tuesday (May 17-19). Now is the time to plan ahead: cover sensitive vegetation, bring those vulnerable potted plants inside, and make sure outdoor animals have warm shelter and unfrozen water. 🥶

🏔️ Heading into the backcountry this weekend? Winter isn't quite done with the high terrain. We are tracking a system that will bring accumulating snow above 4,000 feet across western Montana and north-central Idaho this Saturday and Sunday. ⚠️ The biggest concern isn't just the snow—it's the cold, wet, and breezy conditions creating a high risk for hypothermia for anyone recreating outdoors. Backcountry roads will also become slushy and slick. Plan accordingly, pack extra layers, and be prepared for winter-like conditions in the mountains!