Mountain pass snow forecasts
How much snow is forecast at the top of each pass over the next three days, from 9 weather models adjusted to the height of the summit. Select a pass for each day's snow, whether rain or snow is more likely, and the snow by model.
These are weather forecasts for the summits, not road reports. Each pass page links the official state or provincial road report; check it for closures, chain controls and current road conditions before you drive.
Forecast totals are being updated and will appear here shortly.
Pacific Northwest
California and Nevada
Utah
Colorado
Northern Rockies
- Bozeman Pass (I-90)MT · summit 5,702 ft–
- Homestake Pass (I-90)MT · summit 6,329 ft–
- Lolo Pass (US-12)ID · summit 5,233 ft–
- Lookout Pass (I-90)ID · summit 4,710 ft–
- MacDonald Pass (US-12)MT · summit 6,320 ft–
- Sherman Summit (I-80)WY · summit 8,640 ft–
- Teton Pass (WY-22)WY · summit 8,431 ft–
- Togwotee Pass (US-26/287)WY · summit 9,658 ft–
Southwest
Western Canada
4070 Pro · 7 days free
Plan the drive past day 3
- Every pass out to 16 days, for every model
- Storm timing: when the snow starts, peaks and stops at each summit
- Snow level and freezing level charts through each storm
- Every pass ranked by forecast snow, on a map and in a day-by-day grid
7 days free, then $14.95 a month.