Extreme Cold/Wind Chill — Central Laramie County, Wyoming

2025-01-20 · Central Laramie County, Wyoming

Event narrative

Overnight low temperatures fell to between -15 F and -20 F across central Laramie County from 1/20 into 1/21, with daytime highs generally remaining under 5 F during the afternoon on 1/20. The cold temperatures combined with gusty winds resulted in a prolonged period of extreme wind chills under -30 F. Minimum observed wind chill values reached -35 F at the Cheyenne East WYDOT sensor (9 E Cheyenne) at 7:18 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 1224120. Narrative written by the NWS forecast office that issued the report.