Extreme Cold/Wind Chill — South Laramie Range Foothills, Wyoming

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

Event narrative

Overnight low temperatures fell to between -10 F and -15 F in the North Snowy Range Foothills from 1/20 into 1/21. The combination of cold temperatures and gusty winds resulted in a prolonged period of extreme wind chills under -30 F. Minimum observed wind chill values reached -37 F at the Otto Road WYDOT sensor (16 WSW Cheyenne) at 6:26 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 1224119. Narrative written by the NWS forecast office that issued the report.