Ice dam risk in Henderson, NC
Ice dams in Henderson, NC: how often
0.2 dam days a winter
Almost never. An ordinary house in Henderson sees 0.2 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Henderson averages 2 inches of snow a year and about 1 day 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 Henderson?
- 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.
Henderson winter, month by month
| Month | Snow (in) | Days on ground | Dam days |
|---|---|---|---|
| January | 1.2 | 0.9 | 0.2 |
| February | 0.3 | 0.3 | 0.1 |
| March | 0.1 | 0.0 | 0.0 |
Henderson next to nearby towns
Henderson ranks 56 of 91 North Carolina cities here for ice-dam days, behind Boone at 4.9 days.
- Wake Forest, NC 26 mi, 0.5 days
- Rolesville, NC 28 mi, 0.5 days
- Zebulon, NC 35 mi, 0.1 days
- Durham, NC 36 mi, 0.5 days
- Raleigh, NC 36 mi, 0.5 days
Where these numbers come from
NOAA 1991–2020 climate normals from Henderson 2 NNW, 1.6 miles from Henderson. 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.