Greene County, Ohio · Xenia
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Pipes freeze in Greene County on about 28 nights a year, mostly November to March. Older homes, 28% of the stock here, are most at risk.
March brings the most downpours to Greene County, part of 6.4 heavy-rain days a year. Check the sump first.
28% of homes here predate 1960, when clay and cast iron sewer laterals were standard. Roots and cracks in those lines are a common cause of backups.
Greene County's wettest day in the 2015–2024 record brought 2.59 inches, and about 76 freeze-thaw days a year mean ice dams in some winters.
6% of occupied homes in Greene County heat mainly with wood or propane, below the Ohio county median of 15.9%.
About 46 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
With 72,391 homes and around 169,688 residents, Greene County is 414 square miles of southwest Ohio. Xenia is the county seat; Beavercreek, Fairborn and Bellbrook are the next largest communities. Half the homes here were built before 1976, half after.
44/100 Water Damage Risk Index: Moderate Greene County ranks 57 of 88 Ohio counties. See the statewide ranking and method.The three factors where Greene County ranks highest compared with other Ohio counties.
Winters here are on the gentler end for Ohio, and pipes still freeze. It averaged 98 freezing nights a year over 2015–2024, 28 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 88 Ohio counties that's 63rd.
On February 24, 2015 the low fell to about -10°F, and in the stretch ending February 2021 the county went 15 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
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 Nov 3 and end around Apr 19.
Heavy rain is a bigger factor here than in most of Ohio. About 6.4 days a year bring an inch or more (28th of 88), most often in March, out of 43.4 inches of total precipitation. On May 19, 2020, 2.59 inches fell in a single day. The worst three-day stretch dropped 3.38 inches, ending September 9, 2018, the kind of soaking that overwhelms sump pumps and storm sewers.
The temperature crosses 32°F in both directions on roughly 76 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
Ohio's 88 counties range widely in housing age; Greene ranks 56th, with 57% of its homes built before 1980.
Growth since 2000 added 22% of today's homes. In houses that new, the weak points are washing machine hoses, ice maker lines, water heaters and sump pumps rather than the pipes in the walls.
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
Summer nights that don't drop below 65°F, a good marker of humid air, come about 46 times a year here, above the Ohio county median of 35. 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 expectHeating fuel matters for fire risk. In Greene County it's 60% utility gas, 32% electric, 5% propane and under 1% wood. Most homes here heat with gas or electricity, so cooking and electrical faults are the likelier fire sources. Even a contained kitchen fire can send soot through the ductwork to every room.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Greene County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Clark, Fayette and Madison get more pipe-freeze nights than Greene. Clark County has the oldest housing nearby, with 77% of homes built before 1980.
By the numbers
| Factor | Greene | Ohio median | Rank |
|---|---|---|---|
| Homes built before 1960 | 28% | 37% | 71 of 88 |
| Homes built before 1980 | 57% | 61% | 56 of 88 |
| Homes built 2000 or later | 22% | 17% | 18 of 88 |
| Manufactured or mobile homes | 0.8% | 5.9% | 87 of 88 |
| Vacant homes | 5.8% | 8.4% | 71 of 88 |
| Wood or propane heat | 5.6% | 16% | 75 of 88 |
| Nights at 20°F or colder | 28/yr | 31/yr | 63 of 88 |
| Days with 1 inch+ of rain | 6.4/yr | 5.7/yr | 28 of 88 |
| Freeze-thaw days | 76/yr | 82/yr | 73 of 88 |
| Muggy nights (65°F+) | 46/yr | 35/yr | 7 of 88 |
Rank 1 is the highest value. Bars run from the lowest to the highest Ohio county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Greene County: freezing from November to March, heavy rain in February, March and April.
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