Winter Storm Warning Grass Range, Montana

Winter alerts in Grass Range, newest first, in effect or ended
Alert	State	Severity	Places
Winter Weather AdvisoryEnded 3 to 8 inches of snow, gusts up to 35 mph. Issued March 31 Ended April 3, 2026	Montana	Moderate	69 places Grass Range Great Falls Lewistown Malmstrom AFB Montana City Clancy Sun Prairie Boulder Lincoln Black Eagle and 59 more
Winter Weather AdvisoryEnded 2 to 4 inches of snow, with a few isolated areas near 6 inches. Issued March 26 Ended March 26, 2026	Montana	Moderate	28 places Grass Range Lewistown Stanford Lewistown Heights Denton Moore Hobson Winifred Roy Geyser and 18 more
Winter Weather AdvisoryEnded 3 to 6 inches of snow, gusts up to 40 mph. Issued March 8 Ended March 9, 2026	Montana	Moderate	146 places Grass Range Great Falls Havre Lewistown Malmstrom AFB Shelby Cut Bank North Browning Conrad South Browning and 136 more
Winter Weather AdvisoryEnded 2 to 6 inches of snow below 7000 feet and up to 10 inches above 7000 feet with locally higher amounts possible along the peaks, gusts up to 65 mph. Issued February 26 Ended February 28, 2026	Montana	Moderate	36 places Grass Range Lewistown Fort Belknap Agency Chinook Hays Harlem Rocky Boy's Agency Parker School Boneau St. Pierre and 26 more
Winter Weather AdvisoryEnded 1 to 3 inches of snow. Issued February 17 Ended February 19, 2026	Montana	Moderate	115 places Grass Range Bozeman Helena Belgrade Helena Valley Southeast Helena Valley West Central Lewistown Four Corners Helena Valley Northwest Dillon and 105 more
Winter Weather AdvisoryEnded Another 1 to 3 inches of snow overnight. Issued February 9 Ended February 10, 2026	Montana	Moderate	26 places Grass Range Lewistown Stanford Lewistown Heights Denton Moore Hobson Winifred Roy Geyser and 16 more
Winter Weather AdvisoryEnded 3 to 5 inches of snow, near 12 inches of snow at ridge tops. Issued February 8 Ended February 9, 2026	Montana	Moderate	67 places Grass Range Helena Helena Valley Southeast Lewistown Helena Valley Northwest Helena Valley Northeast Big Sky Montana City East Helena Clancy and 57 more
Winter Weather AdvisoryEnded Up to 5 inches of snow, gusts up to 35 mph. Issued January 23 Ended January 26, 2026	Montana	Moderate	28 places Grass Range Lewistown Stanford Lewistown Heights Denton Moore Hobson Winifred Roy Geyser and 18 more
Winter Weather AdvisoryEnded Up to 6 inches of snow, gusts up to 75 mph. Issued December 16 Ended December 17, 2025	Montana	Moderate	63 places Grass Range Havre Lewistown Big Sky Fort Belknap Agency West Yellowstone Chinook Hays Harlem Havre North and 53 more
Winter Weather AdvisoryEnded Another 2 to 7 inches of snow, gusts up to 40 mph, 6 to 12 inches of snow, with localized amounts approaching 20 inches in the Island Ranges, gusts up to 35 mph. Issued December 10 Ended December 12, 2025	Montana	Moderate	47 places Grass Range Lewistown Fort Benton Rocky Boy West Hays Big Sandy Rocky Boy's Agency Stanford Parker School Boneau and 37 more
Winter Weather AdvisoryEnded 2 to 4 inches of snow on Marias Pass, and up to 7 inches at ridge tops. Issued December 9 Ended December 10, 2025	Montana	Moderate	161 places Grass Range Great Falls Helena Havre Helena Valley Southeast Helena Valley West Central Lewistown Helena Valley Northwest Malmstrom AFB Helena Valley Northeast and 151 more
Winter Weather AdvisoryEnded 2 to 5 inches of snow, gusts up to 40 mph. Issued November 30 Ended December 3, 2025	Montana	Moderate	98 places Grass Range Great Falls Helena Helena Valley Southeast Helena Valley West Central Lewistown Helena Valley Northwest Malmstrom AFB Helena Valley Northeast Big Sky and 88 more