Ice dam risk in Manchester, TN
How often ice dams form in Manchester
0.3 dam days a winter
Almost never. An ordinary house in Manchester sees 0.3 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Manchester averages 3 inches of snow a year and about 2 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 Manchester?
- 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.
Manchester winter, month by month
| Month | Snow (in) | Days on ground | Dam days |
|---|---|---|---|
| January | 0.9 | 0.5 | 0.1 |
| February | 1.1 | 0.8 | 0.1 |
| March | 0.8 | 0.4 | 0.0 |
Manchester next to nearby towns
Manchester ranks 40 of 65 Tennessee cities here for ice-dam days, behind Crossville at 2.6 days.
- Tullahoma, TN 10 mi, 0.3 days
- Winchester, TN 19 mi, 0.4 days
- Shelbyville, TN 22 mi, 0.1 days
- McMinnville, TN 22 mi, 0.5 days
- Murfreesboro, TN 33 mi, 0.3 days
Where these numbers come from
NOAA 1991–2020 climate normals from Tullahoma, 11.2 miles from Manchester. 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.