Ice dam risk in Monrovia, CA
Ice dams in Monrovia, CA: how often
0.0 dam days a winter
Almost never. An ordinary house in Monrovia sees 0.0 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Monrovia 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 Monrovia?
- 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.
Monrovia next to nearby towns
Monrovia ranks 216 of 376 California cities here for ice-dam days, behind Truckee at 36.3 days.
- Duarte, CA 2 mi, 0.0 days
- Arcadia, CA 4 mi, 0.0 days
- Sierra Madre, CA 4 mi, 0.0 days
- Azusa, CA 4 mi, 0.0 days
- Baldwin Park, CA 6 mi, 0.0 days
Where these numbers come from
NOAA 1991–2020 climate normals from San Gabriel Fire Dept, 8.6 miles from Monrovia. 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.