Extreme Cold/Wind Chill — Lost River Valleys, Idaho

2025-01-20 · Lost River Valleys, Idaho

Event narrative

Extreme cold wind chills affected the Lost River Valleys with the coldest reading -32 in Arco.

Wider weather episode

A strong Canadian cold front brought the coldest temperatures of the winter season to southeast Idaho. Several apparent temperature readings of -20 to -55 degrees were recorded after midnight through mid morning on the 20th.

Source: NOAA Storm Events Database, event_id 1233240. Narrative written by the NWS forecast office that issued the report.