Ice dam risk in Connersville, IN
Ice dams in Connersville, IN: how often
7.4 dam days a winter
Moderate risk. On an ordinary house in Connersville, conditions for an ice dam come on about 7.4 days in a normal winter, mostly in January and February.
Connersville averages 16 inches of snow a year and about 26 days with snow on the ground. Most of it comes and goes within a few days. The conditions that make a dam need all three at once: snow, cold at the eave and heat above it.
What your attic does to that number in Connersville
| Attic | Dam days | Risk |
|---|---|---|
| Air-sealed and well insulated | 4.1 | Low |
| Typical, some insulation, not air-sealed | 7.4 | Moderate |
| Older or poorly insulated, warm attic | 11.7 | Moderate |
Sealing and insulating a typical attic takes out about 3.4 days a winter here. It drops the risk from moderate to low. An older house with a warm attic should expect closer to 11.7 days.
Preventing ice dams on a Connersville roof
- Air-seal the attic floor: the gaps around the hatch, light fixtures, plumbing stacks and the top plates of interior walls. This is the fix that removes the cause, and it usually costs less than a season of contractor ice removal.
Which to spend on first: air sealing or heat cable.
Connersville winter, month by month
| Month | Snow (in) | Days on ground | Dam days |
|---|---|---|---|
| January | 6.2 | 11.0 | 3.6 |
| February | 3.4 | 7.4 | 2.1 |
| March | 2.8 | 1.8 | 0.3 |
| October | 0.1 | 0.1 | 0.0 |
| November | 0.3 | 0.2 | 0.0 |
| December | 3.1 | 5.6 | 1.5 |
Connersville next to nearby towns
Connersville ranks 58 of 88 Indiana cities here for ice-dam days, behind Plymouth at 15.9 days.
- Richmond, IN 18 mi, 9.2 days
- New Castle, IN 22 mi, 9.2 days
- Oxford, OH 24 mi, 6.4 days
- Greensburg, IN 29 mi, 5.7 days
- Harrison, OH 34 mi, 3.6 days
Where these numbers come from
NOAA 1991–2020 climate normals from Rushville, 17.0 miles from Connersville. 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.