Gibson County, Tennessee · Trenton
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Gibson County averages 11 nights a year at 20°F or colder, mostly December to February, and 28% of its homes predate 1960.
Basements flood here mostly in February. Gibson County averages 15 days a year with an inch of rain or more.
Sewage backups in Gibson County spike on heavy-rain days, about 15 a year, when sewer mains fill up and water finds the lowest drain.
Roof leaks here come from summer downpours and, with about 55 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
4% of occupied homes in Gibson County heat mainly with wood or propane, below the Tennessee county median of 7.8%.
With 91 muggy nights a year, mold in Gibson County can appear within days of a leak. Dry first, then clean.
Local risk profile
Gibson County covers 603 square miles of western Tennessee, with about 50,869 residents and 22,617 homes. The county seat is Trenton, and Milan, Humboldt and Medina round out the largest towns. Half the homes here were built before 1976, half after.
74/100 Water Damage Risk Index: High Gibson County ranks 3 of 95 Tennessee counties. See the statewide ranking and method.The three factors where Gibson County ranks highest compared with other Tennessee counties.
Pipe-freeze risk in Gibson County sits near the middle of the state. In the 2015–2024 record the county logged about 11 nights a year at or below 20°F (45th of 95) and 61 below freezing. Twenty degrees is roughly where uninsulated pipes start to freeze.
On December 23, 2022 the low fell to about -2°F, and in the stretch ending February 2021 the county went 9 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 December to February. That's when an outdoor spigot left connected to a hose, or a pipe in a crawl space, is most likely to split.
Freezing nights typically start around Nov 4 and end around Mar 28.
Heavy rain is a bigger factor here than in most of Tennessee. About 15 days a year bring an inch or more (27th of 95), most often in February, out of 56.3 inches of total precipitation. On March 10, 2016, 3.62 inches fell in a single day. The worst three-day stretch dropped 6.01 inches, ending March 11, 2016, the kind of soaking that overwhelms sump pumps and storm sewers.
About 55 days a year swing from below freezing at night to above freezing by day. Those freeze-thaw cycles feed ice dams on roofs, open cracks in foundations and driveways, and stress pipes that are already marginal.
Housing
Roughly 56% of the county's housing was built before 1980. That puts Gibson among the oldest housing stocks of Tennessee's 95 counties.
In Gibson County 28% of homes are older than 1960. If yours is one of them and the plumbing has never been replaced, expect galvanized steel supply pipe and cast iron drain lines, the two materials most likely to fail quietly.
About 23% of homes went up between 1980 and 1999. Some houses from the late 1970s to the mid-1990s were plumbed with polybutylene, a gray plastic pipe known for failing at fittings. A plumber can tell you in a few minutes whether you have it.
11% of homes are manufactured or mobile homes, below the Tennessee county median of 15.9%. Their water lines run under the floor behind the skirting, so a torn skirt or failed heat tape freezes them faster than lines in a site-built house.
Renters occupy 31% 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
Gibson County averages 91 warm, muggy nights a year (lows of 65°F or more) and gets the most rain in March. 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 expectHeating fuel matters for fire risk. In Gibson County it's 43% utility gas, 52% electric, 3% propane and under 1% 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 Gibson County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Carroll, Obion and Weakley get more pipe-freeze nights than Gibson. Obion County has the oldest housing nearby, with 58% of homes built before 1980.
By the numbers
| Factor | Gibson | Tennessee median | Rank |
|---|---|---|---|
| Homes built before 1960 | 28% | 16% | 3 of 95 |
| Homes built before 1980 | 56% | 41% | 5 of 95 |
| Homes built 2000 or later | 21% | 27% | 74 of 95 |
| Manufactured or mobile homes | 11% | 16% | 69 of 95 |
| Vacant homes | 10% | 12% | 61 of 95 |
| Wood or propane heat | 3.5% | 7.8% | 79 of 95 |
| Nights at 20°F or colder | 11/yr | 11/yr | 45 of 95 |
| Days with 1 inch+ of rain | 15/yr | 14/yr | 27 of 95 |
| Freeze-thaw days | 55/yr | 60/yr | 82 of 95 |
| Muggy nights (65°F+) | 91/yr | 74/yr | 11 of 95 |
Rank 1 is the highest value. Bars run from the lowest to the highest Tennessee county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Gibson County: freezing from December to February, heavy rain in February, March and December.
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