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Winter Weather in Southern Clearwater Mountains, Idaho
Winter Weather December 18, 2025 – December 19, 2025 · Southern Clearwater Mountains, Idaho
What the National Weather Service wrote
The Idaho side of the Bitterroot crest absorbed heavy moisture from the atmospheric river, leading to high-impact winter conditions right along the Lolo Pass border. Further down the Highway 12 corridor at Powell, intense snowfall rates dropped 5 inches of snow in just a 6-hour period during the afternoon and evening of December 18. In Dixie, 6.5 inches of snow fell.
The wider storm
An atmospheric river brought heavy snow and strong winds to the Clearwater and Bitterroot Mountains.
Source: NOAA Storm Events Database, event 1307754. Narratives are written by the National Weather Service forecast office that issued the report.
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