Ice dam risk in San Bernardino, CA
Will your roof get ice dams in San Bernardino, CA?
0.0 dam days a winter
Almost never. An ordinary house in San Bernardino sees 0.0 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
San Bernardino 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 San Bernardino?
- 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.
San Bernardino next to nearby towns
San Bernardino ranks 23 of 376 California cities here for ice-dam days, behind Truckee at 36.3 days.
- Rialto, CA 6 mi, 0.0 days
- Colton, CA 6 mi, 0.0 days
- Loma Linda, CA 7 mi, 0.0 days
- Highland, CA 8 mi, 0.0 days
- Grand Terrace, CA 8 mi, 0.0 days
Where these numbers come from
NOAA 1991–2020 climate normals from Redlands, 9.2 miles from San Bernardino. 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.
- The nearest weather station sits at a noticeably different elevation from San Bernardino, so the snow figures may run high or low for the town itself.