Ice dam risk in Mission Viejo, CA
Will your roof get ice dams in Mission Viejo, CA?
0.0 dam days a winter
Almost never. An ordinary house in Mission Viejo sees 0.0 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Mission Viejo 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 Mission Viejo?
- 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.
Mission Viejo next to nearby towns
Mission Viejo ranks 91 of 376 California cities here for ice-dam days, behind Truckee at 36.3 days.
- Laguna Hills, CA 3 mi, 0.0 days
- Lake Forest, CA 3 mi, 0.0 days
- Rancho Santa Margarita, CA 4 mi, 0.0 days
- Laguna Woods, CA 4 mi, 0.0 days
- Aliso Viejo, CA 5 mi, 0.0 days
Where these numbers come from
NOAA 1991–2020 climate normals from Laguna Beach, 8.4 miles from Mission Viejo. 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.