Indiana County, Pennsylvania · Indiana
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Pipes freeze in Indiana County on about 39 nights a year, mostly November to March. Older homes, 39% of the stock here, are most at risk.
Heavy rain days of an inch or more come about 6.5 times a year here, most often in September. A sump pump that hasn't run since last season is a common weak point.
Sewage backups in Indiana County spike on heavy-rain days, about 6.5 a year, when sewer mains fill up and water finds the lowest drain.
Roof leaks here come from summer downpours and, with about 102 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
8% of occupied homes in Indiana County heat mainly with wood or propane, below the Pennsylvania county median of 10%.
About 12 nights a year here stay at 65°F or warmer, so basements and crawl spaces can grow mold even without a leak.
Local risk profile
Indiana County covers 827 square miles of western Pennsylvania, with about 83,042 residents and 37,626 homes. Indiana is the county seat; Blairsville, Homer City and Clymer are the next largest communities. Half the homes here were built before 1970, half after.
42/100 Water Damage Risk Index: Moderate Indiana County ranks 50 of 67 Pennsylvania counties. See the statewide ranking and method.The three factors where Indiana County ranks highest compared with other Pennsylvania counties.
Pipe-freeze risk in Indiana County sits near the middle of the state. In the 2015–2024 record the county logged about 39 nights a year at or below 20°F (31st of 67) and 129 below freezing. Twenty degrees is roughly where uninsulated pipes start to freeze.
Cold snaps are the real risk. The worst in the record lasted 17 days below freezing (ending March 2015), and the low bottomed out near -14°F on February 24, 2015.
The freeze season here runs November to March, with January the coldest. If you travel then, leave the thermostat at 55°F or above and open sink cabinets on outside walls.
Freezing nights typically start around Oct 22 and end around May 4.
Rainfall is about average for Pennsylvania. About 6.5 days a year bring an inch or more (44th of 67), most often in September, out of 49.9 inches of total precipitation. On September 10, 2018, 3.55 inches fell in a single day. The worst three-day stretch dropped 6.27 inches, ending September 11, 2018, the kind of soaking that overwhelms sump pumps and storm sewers.
The temperature crosses 32°F in both directions on roughly 102 days a year. Each cycle melts and refreezes water at roof edges and in foundation cracks, which is how ice dams and basement seepage get started.
Housing
Roughly 66% of the county's housing was built before 1980. That puts Indiana near the middle of Pennsylvania's 67 counties.
Older and newer homes sit side by side here: 39% predate 1960 and 13% are from 2000 or later. Corroded pipe is the typical failure in the first group, burst supply hoses in the second.
Here 9% of housing is manufactured homes. Check the skirting and the heat tape on the main water line every fall, because that one exposed line is what freezes.
14% of homes were vacant at survey time. A leak in an empty rental or seasonal house can run for days before anyone notices, which is why those losses tend to be larger.
Beyond water
Indiana County averages 12 warm, muggy nights a year (lows of 65°F or more) and gets the most rain in May. Keep indoor humidity under 60%, as the EPA advises, and dry any leak within 24 to 48 hours; in a humid month a wet basement left alone won't dry by itself.
Mold remediation: what to expectBy main heating fuel, Indiana County homes break down as 55% utility gas, 18% electric, 5% propane and 3% wood. Fires here are likelier to start in the kitchen or the wiring than in the furnace. After any fire, keep the HVAC off until ducts are checked, or soot will travel through the house.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Indiana County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Cambria, Clearfield and Jefferson get more pipe-freeze nights than Indiana. Cambria County has the oldest housing nearby, with 80% of homes built before 1980.
By the numbers
| Factor | Indiana | Pennsylvania median | Rank |
|---|---|---|---|
| Homes built before 1960 | 39% | 42% | 40 of 67 |
| Homes built before 1980 | 66% | 66% | 34 of 67 |
| Homes built 2000 or later | 13% | 13% | 33 of 67 |
| Manufactured or mobile homes | 8.7% | 6.6% | 22 of 67 |
| Vacant homes | 14% | 12% | 28 of 67 |
| Wood or propane heat | 7.8% | 10% | 46 of 67 |
| Nights at 20°F or colder | 39/yr | 37/yr | 31 of 67 |
| Days with 1 inch+ of rain | 6.5/yr | 7/yr | 44 of 67 |
| Freeze-thaw days | 102/yr | 98/yr | 19 of 67 |
| Muggy nights (65°F+) | 12/yr | 16/yr | 43 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 Indiana County: freezing from November to March, heavy rain in June, August 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