Ice dam risk in Collierville, TN
How often ice dams form in Collierville
0.2 dam days a winter
Almost never. An ordinary house in Collierville sees 0.2 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Collierville averages 1 inch 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 Collierville?
- 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.
Collierville winter, month by month
| Month | Snow (in) | Days on ground | Dam days |
|---|---|---|---|
| January | 0.7 | 0.6 | 0.1 |
| February | 0.5 | 0.7 | 0.1 |
| March | 0.2 | 0.1 | 0.0 |
Collierville next to nearby towns
Collierville ranks 48 of 65 Tennessee cities here for ice-dam days, behind Crossville at 2.6 days.
- Germantown, TN 5 mi, 0.4 days
- Olive Branch, MS 10 mi, 0.2 days
- Arlington, TN 14 mi, 0.3 days
- Bartlett, TN 15 mi, 0.3 days
- Lakeland, TN 15 mi, 0.3 days
Where these numbers come from
NOAA 1991–2020 climate normals from Collierville, 2.7 miles from Collierville. 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.