Extreme Cold/Wind Chill — Fergus County Below 4500ft, Montana

2025-01-20 · Fergus County Below 4500ft, Montana

Event narrative

ASOS station KLWT Lewistown Airport measured wind chill down to -43 F.

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 1237626. Narrative written by the NWS forecast office that issued the report.