Weather in Boulder

High Wind Warning issued May 12 at 11:48PM MDT until May 13 at 9:00PM MDT by NWS Great Falls MT

Areas: Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Northwest Beaverhead County; Beaverhead and Western Madison below 6000ft; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains

12/05/2026, 23:48:00 → 13/05/2026, 17:15:00

* WHAT...South to southwesterly winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Southwestern Montana along and south of Interstate 90, and Canyon Ferry Area. * WHEN...From noon to 9 PM MDT Wednesday. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...There will also be widely scattered showers and thunderstorms capable of producing localized wind gusts between 60 and 80 mph Wednesday afternoon and evening.

High Wind Warning issued May 12 at 11:48PM MDT until May 13 at 9:00PM MDT by NWS Great Falls MT

Areas: Big Belt, Bridger and Castle Mountains

12/05/2026, 23:48:00 → 13/05/2026, 17:15:00

* WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Big Belt, Bridger and Castle Mountains. * WHEN...From noon to 9 PM MDT Wednesday. * IMPACTS...High winds may move loose debris, damage property and cause isolated power outages. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...There will also be widely scattered showers and thunderstorms capable of producing localized wind gusts between 60 and 80 mph Wednesday afternoon and evening.

Wind Advisory issued May 13 at 3:12AM MDT until May 14 at 12:00AM MDT by NWS Missoula MT

Areas: Missoula/Bitterroot Valleys; Bitterroot/Sapphire Mountains; Butte/Blackfoot Region; Potomac/Seeley Lake Region

13/05/2026, 03:12:00 → 14/05/2026, 00:00:00

* WHAT...Southwest winds 20 to 30 mph with gusts up to 55 mph expected. Isolated stronger gusts are possible with showers and thunderstorms. * WHERE...Bitterroot/Sapphire Mountains, Butte/Blackfoot Region, Missoula/Bitterroot Valleys, and Potomac/Seeley Lake Region. * WHEN...From noon today to midnight MDT tonight. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.