Extreme Cold/Wind Chill — Upper North Platte River Basin, Wyoming

2025-01-20 to 2025-01-21 · Upper North Platte River Basin, Wyoming

Event narrative

Overnight low temperatures fell to between -15 and -20 F across the Upper North Platte River Basin from 1/20 into 1/21. The cold temperatures combined with gusty winds resulted in a period of extreme wind chills under -30 F. Minimum observed wind chill values reached -38 F at the Skyline WYDOT sensor (12 ESE Encampment) at 9:48 PM MST on 1/20.

Wider weather episode

A strong arctic front brought prolonged frigid temepratures to southeast Wyoming Friday, January 17 through the early morning of Tuesday, January 21. The coldest temperatures occured Sunday night and Monday night.

Source: NOAA Storm Events Database, event_id 1224099. Narrative written by the NWS forecast office that issued the report.