Extreme Cold/Wind Chill in Niobrara County, Wyoming

Extreme Cold/Wind Chill January 20, 2025 · Niobrara County, Wyoming

What the National Weather Service wrote

Overnight low temperatures ranged from -10 F to -15 F across Niobrara County from 1/20 into 1/21, with daytime highs remaining near 0 F during the afternoon on 1/20. 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 -38 F at the Lusk UPR site (1 NNW Lusk) at 3:37AM MST on 1/20.

The wider storm

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 1224093. Narratives are written by the National Weather Service forecast office that issued the report.

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