Extreme Cold/Wind Chill — Niobrara County, Wyoming

2026-01-25 to 2026-01-26 · Niobrara County, Wyoming

Event narrative

Overnight low temperatures ranged from -15 F to -20 F across Niobrara County from 1/25 into 1/26. The combination of cold temperatures and gusty winds resulted in a period of extreme wind chills under -25 F. Minimum observed wind chill values reached -34 F at a Union Pacific Railroad sensor (7 WNW Van Tassell) at 10:55 PM MST on 1/25.

Wider weather episode

A strong arctic front brought prolonged frigid temperatures to southeast Wyoming Sunday, January 25 through the morning of Monday, January 26. The coldest temperatures occurred Sunday night.

Source: NOAA Storm Events Database, event_id 1310842. Narrative written by the NWS forecast office that issued the report.