Severe Weather in Yellowstone County, Montana

Every severe weather report published for Yellowstone County, Montana, newest first.

Severe WeatherSep 2, 2026, 2:23 p.m. ETMontana, United States
Red Flag Warning for Gallatin National Forest and Other Southern Montana Zones Through 9 PM Thursday
The National Weather Service has issued a Red Flag Warning for eight zones in southern Montana, including Gallatin National Forest, in effect from noon to 9 PM MDT Thursday.
Severe WeatherSep 1, 2026, 2:23 p.m. ETMontana, United States
Fire Weather Watch for Gallatin National Forest and Other Montana Zones Starts Sept. 3
The National Weather Service has issued a Fire Weather Watch for parts of Montana, effective from noon to 8 p.m. on September 3.

Red Flag Warning for Gallatin National Forest and Other Southern Montana Zones Through 9 PM Thursday