Extreme Cold/Wind Chill — South Laramie Range, Wyoming

2025-01-20 to 2025-01-21 · South Laramie Range, Wyoming

Event narrative

Overnight low temperatures fell to near -20 F across the South Laramie Range from 1/20 into 1/21. The combination of cold temperatures and gusty winds resulted in a prolonged period of extreme wind chills under -35 F. Minimum observed wind chill values reached -46 F at the Summit East WYDOT sensor (11 SE Laramie) at 8:18 AM 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 1224102. Narrative written by the NWS forecast office that issued the report.