Winter Storm in Bighorn Mountains West, Wyoming

Winter Storm December 5, 2025 – December 6, 2025 · Bighorn Mountains West, Wyoming

What the National Weather Service wrote

Heavy snow fell along the western slopes of the Bighorn Range, with a maximum of 15 inches of snow at the Bone Springs Divide SNOTEL site.

The wider storm

A Pacific weather system moved into Wyoming and brought heavy snow to the western mountains and valleys. The heaviest snow fell in the Tetons with 22 inches of new snow at the Jackson Hole Mountain Resort. Over a foot of new snow also fell in portions of Yellowstone Park, the Absarokas, and the western Bighorn Range. For the valleys, up to 14 inches fell in Star Valley and 11 inches in Jackson Hole.

Source: NOAA Storm Events Database, event 1306225. Narratives are written by the National Weather Service forecast office that issued the report.

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