Ice dam risk in Hernando, MS
How often ice dams form in Hernando
0.2 dam days a winter
Almost never. An ordinary house in Hernando sees 0.2 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Hernando averages 2 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 Hernando?
- 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.
Hernando winter, month by month
| Month | Snow (in) | Days on ground | Dam days |
|---|---|---|---|
| January | 0.9 | 0.6 | 0.1 |
| February | 0.7 | 0.7 | 0.1 |
| March | 0.1 | 0.0 | 0.0 |
| November | 0.1 | 0.0 | 0.0 |
| December | 0.1 | 0.3 | 0.0 |
Hernando next to nearby towns
Hernando ranks 4 of 41 Mississippi cities here for ice-dam days, behind Southaven at 0.2 days.
- Southaven, MS 7 mi, 0.2 days
- Horn Lake, MS 8 mi, 0.2 days
- Olive Branch, MS 11 mi, 0.2 days
- Memphis, TN 18 mi, 0.2 days
- Germantown, TN 20 mi, 0.4 days
Where these numbers come from
NOAA 1991–2020 climate normals from Hernando, 3.3 miles from Hernando. 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.