Ice dam risk in Roswell, GA
How often ice dams form in Roswell
0.0 dam days a winter
Almost never. An ordinary house in Roswell sees 0.0 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Roswell 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 Roswell?
- 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.
Roswell 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 |
Roswell next to nearby towns
Roswell ranks 34 of 101 Georgia cities here for ice-dam days, behind Sandy Springs at 0.2 days.
- Alpharetta, GA 5 mi, 0.0 days
- Dunwoody, GA 7 mi, 0.2 days
- Sandy Springs, GA 8 mi, 0.2 days
- Milton, GA 8 mi, 0.0 days
- Johns Creek, GA 8 mi, 0.0 days
Where these numbers come from
NOAA 1991–2020 climate normals from Cumming 2N, 18.3 miles from Roswell. 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.