Ice dam risk in Columbia, TN
How often ice dams form in Columbia
0.1 dam days a winter
Almost never. An ordinary house in Columbia sees 0.1 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Columbia 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 Columbia?
- 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.
Columbia winter, month by month
| Month | Snow (in) | Days on ground | Dam days |
|---|---|---|---|
| January | 0.3 | 0.1 | 0.0 |
| February | 0.4 | 0.2 | 0.0 |
| March | 0.2 | 0.0 | 0.0 |
Columbia next to nearby towns
Columbia ranks 60 of 65 Tennessee cities here for ice-dam days, behind Crossville at 2.6 days.
- Spring Hill, TN 11 mi, 0.5 days
- Lewisburg, TN 19 mi, 0.4 days
- Franklin, TN 23 mi, 0.1 days
- Fairview, TN 25 mi, 0.2 days
- Brentwood, TN 30 mi, 0.1 days
Where these numbers come from
NOAA 1991–2020 climate normals from Columbia 3 WNW, 2.5 miles from Columbia. 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.