Ice dam risk in Marathon, FL
Will your roof get ice dams in Marathon, FL?
0.0 dam days a winter
Almost never. An ordinary house in Marathon sees 0.0 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Marathon 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 Marathon?
- 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.
Marathon next to nearby towns
Marathon ranks 172 of 173 Florida cities here for ice-dam days, behind Jacksonville at 0.0 days.
- Key West, FL 49 mi, 0.0 days
- Florida City, FL 60 mi, 0.0 days
- Homestead, FL 62 mi, 0.0 days
- Cutler Bay, FL 73 mi, 0.0 days
- Palmetto Bay, FL 76 mi, 0.0 days
Where these numbers come from
NOAA 1991–2020 climate normals from Duck Key, 7.9 miles from Marathon. 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.