Extreme Cold/Wind Chill in Upper Green River Basin Foothills, Wyoming

Frigid temperatures occurred throughout the region. Some of the coldest temperatures included minus 44 degrees at Bondurant and minus 36 degrees at the Pinedale airport.

A combination of an arctic air mass, a clear sky, a long early January night and a deep, fresh snow pack brought frigid temperatures to much of western and central Wyoming. Four different counties recorded low temperatures under minus 40, including a low of minus 45 East of Rock Springs. All eleven counties in the County Warning Area recorded a temperatures of -30 or lower on the night of January 5-6, 2017.