Ice dam risk in Sierra Vista, AZ
Will your roof get ice dams in Sierra Vista, AZ?
0.0 dam days a winter
Almost never. An ordinary house in Sierra Vista sees 0.0 days a winter when an ice dam can form, because snow rarely stays on a roof long enough below freezing.
Sierra Vista averages 0 inches 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 Sierra Vista?
- 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.
Sierra Vista winter, month by month
| Month | Snow (in) | Days on ground | Dam days |
|---|---|---|---|
| January | 0.4 | 0.0 | 0.0 |
Sierra Vista next to nearby towns
Sierra Vista ranks 27 of 44 Arizona cities here for ice-dam days, behind Flagstaff at 16.2 days.
- Nogales, AZ 39 mi, 0.0 days
- Sahuarita, AZ 46 mi, 0.0 days
- Douglas, AZ 47 mi, 0.0 days
- Tucson, AZ 52 mi, 0.0 days
- Oro Valley, AZ 71 mi, 0.0 days
Where these numbers come from
NOAA 1991–2020 climate normals from Sierra Vista, 2.8 miles from Sierra Vista. 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.