Ice dam risk in Sonoma, CA
Will your roof get ice dams in Sonoma, CA?
0.0 dam days a winter
Almost never. An ordinary house in Sonoma sees 0.0 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Sonoma averages 0 inches of snow a year and about 0 days with snow on the ground. Too little lies on the roof for long. The conditions that make a dam need all three at once: snow, cold at the eave and heat above it.
Do you need to do anything in Sonoma?
- Nothing for ice dams. If you are buying here and an inspector mentions water at the eaves, ask what they saw: it is far more likely a gutter, flashing or drip-edge problem than ice.
Snowy places are not always the worst: why snowfall misleads.
Sonoma next to nearby towns
Sonoma ranks 369 of 376 California cities here for ice-dam days, behind Truckee at 36.3 days.
- Napa, CA 9 mi, 0.0 days
- Petaluma, CA 10 mi, 0.0 days
- American Canyon, CA 13 mi, 0.0 days
- Rohnert Park, CA 14 mi, 0.0 days
- Novato, CA 15 mi, 0.0 days
Where these numbers come from
NOAA 1991–2020 climate normals from Sonoma, 0.6 miles from Sonoma. A dam day is a day with snow on the roof and freezing at the eave while heat or sun melts the snow above it. This describes a normal winter, not this one.