Erie County, Pennsylvania · Erie
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Pipes freeze in Erie County on about 42 nights a year, mostly November to March. Older homes, 46% of the stock here, are most at risk.
Heavy rain days of an inch or more come about 5.6 times a year here, most often in September. A sump pump that hasn't run since last season is a common weak point.
Backups often follow heavy rain, which Erie County gets about 5.6 days a year, when storm water overloads sewer mains and pushes up through the lowest drain in the house.
Roof leaks here come from summer downpours and, with about 85 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
7% of occupied homes in Erie County heat mainly with wood or propane, below the Pennsylvania county median of 10%.
With 19 muggy nights a year, mold in Erie County can appear within days of a leak. Dry first, then clean.
Local risk profile
About 269,052 people live in Erie County, 799 square miles in northwest Pennsylvania, in roughly 120,111 homes. Erie is the county seat; Northwest Harborcreek, Corry and Edinboro are the next largest communities. The county's median home was built in 1964.
48/100 Water Damage Risk Index: Elevated Erie County ranks 38 of 67 Pennsylvania counties. See the statewide ranking and method.The three factors where Erie County ranks highest compared with other Pennsylvania counties.
For frozen pipes, Erie County is a typical Pennsylvania county, which is still plenty. From 2015–2024 it averaged 42 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 123 nights at or below 32°F. That ranks 27th of 67 counties.
On February 20, 2015 the low fell to about -22°F, and in the stretch ending March 2015 the county went 19 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
Expect the hardest freezes in January, inside a season that runs November to March. That's when an outdoor spigot left connected to a hose, or a pipe in a crawl space, is most likely to split.
On average the first fall freeze arrives around Oct 31 and the last spring freeze around May 5.
Erie gets fewer downpours than most Pennsylvania counties, but they still fill basements. The county gets about 46.6 inches of rain and melted snow a year, with 5.6 days of an inch or more (58th of 67). Those downpours cluster in June, July and September, when sump pumps and gutters are tested hardest. The wettest day on record brought 2.2 inches on November 12, 2022. Multi-day storms matter most for basements; the wettest three days on record here totaled 3.79 inches (through September 28, 2022).
Freeze-thaw days, below freezing overnight and above it by afternoon, come about 85 times a year here. They're the main driver of ice dams and of water working its way through foundation cracks in late winter.
Housing
Pennsylvania's 67 counties range widely in housing age; Erie ranks 23rd, with 71% of its homes built before 1980.
Before 1960 is when 46% of these homes went up. Galvanized supply lines and cast iron drains were standard then, and after 60-plus years both corrode and crack, often out of sight inside a wall or under a slab.
Renters occupy 32% of homes. If you rent, the building is usually the landlord's to repair, but your belongings are only covered by renters insurance.
Beyond water
About 19 nights a year in Erie County stay at 65°F or warmer, a sign of muggy summer air (31st of 67 counties). October is the wettest month. The EPA recommends keeping indoor humidity below 60%, ideally 30 to 50%. Basements can pass 60% on their own in summer, so a dehumidifier matters even without a leak, and anything wet should be dried within 24 to 48 hours.
Mold remediation: what to expectMain heating fuel in Erie County's occupied homes: 78% utility gas, 11% electric, 5% propane and 2% wood. Heating equipment, cooking and electrical failures cause most home fires nationally. Even a small kitchen fire can leave soot through the whole house, because smoke follows air currents into closets, ducts and attic space.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Erie County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Every neighboring county gets more pipe-freeze nights than Erie. Warren County has the oldest housing nearby, with 76% of homes built before 1980.
By the numbers
| Factor | Erie | Pennsylvania median | Rank |
|---|---|---|---|
| Homes built before 1960 | 46% | 42% | 25 of 67 |
| Homes built before 1980 | 71% | 66% | 23 of 67 |
| Homes built 2000 or later | 12% | 13% | 39 of 67 |
| Manufactured or mobile homes | 4.6% | 6.6% | 46 of 67 |
| Vacant homes | 7.9% | 12% | 51 of 67 |
| Wood or propane heat | 6.7% | 10% | 51 of 67 |
| Nights at 20°F or colder | 42/yr | 37/yr | 27 of 67 |
| Days with 1 inch+ of rain | 5.6/yr | 7/yr | 58 of 67 |
| Freeze-thaw days | 85/yr | 98/yr | 63 of 67 |
| Muggy nights (65°F+) | 19/yr | 16/yr | 31 of 67 |
Rank 1 is the highest value. Bars run from the lowest to the highest Pennsylvania county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Erie County: freezing from November to March, heavy rain in June, July and September.
Sources: U.S. Census Bureau, ACS 2024 5-year estimates (2020-2024); weather from NOAA nClimGrid-Daily county averages (EpiNOAA), 2015–2024, averaged across the county; county boundaries from Census TIGER. Reviewed 2026-10-21. Methodology