Ice dam risk in Norcross, GA
How often ice dams form in Norcross
0.0 dam days a winter
Almost never. An ordinary house in Norcross sees 0.0 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Norcross averages 1 inch 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 Norcross?
- 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.
Norcross winter, month by month
| Month | Snow (in) | Days on ground | Dam days |
|---|---|---|---|
| January | 0.1 | 0.0 | 0.0 |
| February | 0.2 | 0.0 | 0.0 |
| March | 0.3 | 0.0 | 0.0 |
Norcross next to nearby towns
Norcross ranks 71 of 101 Georgia cities here for ice-dam days, behind Sandy Springs at 0.2 days.
- Peachtree Corners, GA 3 mi, 0.0 days
- Doraville, GA 4 mi, 0.2 days
- Lilburn, GA 5 mi, 0.0 days
- Duluth, GA 5 mi, 0.0 days
- Dunwoody, GA 6 mi, 0.2 days
Where these numbers come from
NOAA 1991–2020 climate normals from Cumming 2N, 20.6 miles from Norcross. 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.