Weather in Helena Valley Northwest

High Wind Watch issued May 12 at 11:48PM MDT until May 14 at 6:00PM MDT by NWS Great Falls MT

Areas: Helena Valley

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

* WHAT...Westerly winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Helena Valley. * WHEN...From late Wednesday night through Thursday afternoon. * IMPACTS...High winds may move loose debris, damage property and cause isolated power outages. Travel could be difficult, especially for high profile vehicles.

High Wind Warning issued May 12 at 11:48PM MDT until May 15 at 12:00AM MDT by NWS Great Falls MT

Areas: East Glacier Park Region; Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Southern Rocky Mountain Front; Southern High Plains; Upper Blackfoot and MacDonald Pass

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

* WHAT...Westerly winds 40 to 50 mph with gusts up to 90 mph possible along the Rocky Mountain Front, with gusts up to 75 mph elsewhere. * WHERE...The Rocky Mountain Front and adjacent foothills and plains, Eastern Glacier, Western Toole, and Central Pondera Counties, and Upper Blackfoot and MacDonald Pass. * WHEN...From 6 PM Wednesday to midnight MDT Thursday Night. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult to dangerous, especially for high profile vehicles.

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.

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.

Severe Thunderstorm Watch issued May 13 at 12:51PM MDT until May 13 at 9:00PM MDT by NWS Great Falls MT

Areas: Beaverhead, MT; Blaine, MT; Broadwater, MT; Cascade, MT; Chouteau, MT; Fergus, MT; Gallatin, MT; Hill, MT; Jefferson, MT; Judith Basin, MT; Lewis and Clark, MT; Liberty, MT; Madison, MT; Meagher, MT; Pondera, MT; Teton, MT; Toole, MT

13/05/2026, 12:51:00 → 13/05/2026, 21:00:00

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 199 IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR THE FOLLOWING AREAS IN MONTANA THIS WATCH INCLUDES 17 COUNTIES IN CENTRAL MONTANA CASCADE FERGUS JUDITH BASIN MEAGHER IN NORTH CENTRAL MONTANA BLAINE CHOUTEAU HILL LIBERTY PONDERA TETON TOOLE IN SOUTHWEST MONTANA BEAVERHEAD BROADWATER GALLATIN JEFFERSON MADISON IN WEST CENTRAL MONTANA LEWIS AND CLARK THIS INCLUDES THE CITIES OF AUGUSTA, BATTLE RIDGE PASS, BELT, BIG HOLE PASS, BIG SANDY, BOULDER, BOULDER HILL, BOZEMAN APT, BOZEMAN PASS, BRADY, BYNUM, CARTER, CASCADE, CHESTER, CHIEF JOSEPH PASS, CHINOOK, CHOTEAU, CITY OF BOZEMAN, CONRAD, DEEP CREEK PASS, DILLON, DUTTON, ELK PARK PASS, ENNIS, FAIRFIELD, FLESHER PASS, FORT BENTON, GRASS RANGE, GREAT FALLS, HARLEM, HAVRE, HAYS, HEART BUTTE, HELENA, HOBSON, HOMESTAKE PASS, KINGS HILL PASS, LEWISTOWN, LEWISTOWN DIVIDE, LINCOLN, MACDONALD PASS, MARTINSDALE, MONIDA PASS, MONTANA CITY, NORRIS HILL, RAYNESFORD, RAYNOLDS PASS, ROCKY BOY, ROGERS PASS, RUDYARD, SHELBY, STANFORD, SUNBURST, TARGHEE PASS, TOSTON, TOWNSEND, TWIN BRIDGES, VIRGINIA CITY, WEST YELLOWSTONE, WHITE SULPHUR SPRINGS, WHITEHALL, WHITLASH, WINIFRED, WINSTON, WISDOM, AND WISE RIVER.