Extreme Cold/Wind Chill in Helena Valley, Montana

Extreme Cold/Wind Chill December 20, 2022 – December 22, 2022 · Helena Valley, Montana

What the National Weather Service wrote

Multiple sensors measured wind chills of less than -40 F, including mesonet station FW7359 in Helena which measured a minimum wind chill of -44 F.

The wider storm

Arctic air dropped south from Canada the week before Christmas bringing widespread frigid wind chills to the region. The arctic front reported in strong wind gusts and blizzard conditions in Southwest Montana. Additional areas of light to moderate snow affected much of the region.

Source: NOAA Storm Events Database, event 1070178. Narratives are written by the National Weather Service forecast office that issued the report.

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