Extreme Cold/Wind Chill — Custer, Montana

2025-02-17 to 2025-02-19 · Custer, Montana

Event narrative

Wind chills were as cold as -40F across the area.

Wider weather episode

A bitterly cold arctic airmass settled across southeast Montana. This resulted in dangerously cold temperatures and wind chill readings.

Source: NOAA Storm Events Database, event_id 1236912. Narrative written by the NWS forecast office that issued the report.