Extreme Cold/Wind Chill — Gallatin Valley, Montana

2025-01-20 · Gallatin Valley, Montana

Event narrative

ASOS station KBZN Bozeman Airport measured wind chill down to -41F.

Wider weather episode

Northerly surface winds in place combined with a northwesterly flow aloft east of an upper level ridge promoted the combination of cold temperatures and breezy winds across portions of the region. The combination allowed for wind chills to dip below 35 below in many locations.

Source: NOAA Storm Events Database, event_id 1237624. Narrative written by the NWS forecast office that issued the report.