Ice dam risk in Key West, FL
Ice dams in Key West, FL: how often
0.0 dam days a winter
Almost never. An ordinary house in Key West sees 0.0 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Key West 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 Key West?
- 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.
Key West next to nearby towns
Key West ranks 104 of 173 Florida cities here for ice-dam days, behind Jacksonville at 0.0 days.
- Marathon, FL 49 mi, 0.0 days
- Marco Island, FL 95 mi, 0.0 days
- Florida City, FL 102 mi, 0.0 days
- Homestead, FL 104 mi, 0.0 days
- Naples, FL 110 mi, 0.0 days
Where these numbers come from
NOAA 1991–2020 climate normals from Key West Nas, 5.9 miles from Key West. 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.