Fayette County, Tennessee · Somerville
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Pipes freeze in Fayette County on about 7 nights a year, mostly December to January. Older homes, 7% of the stock here, are most at risk.
Basements flood here mostly in March. Fayette County averages 13.9 days a year with an inch of rain or more.
Sewage backups in Fayette County spike on heavy-rain days, about 13.9 a year, when sewer mains fill up and water finds the lowest drain.
Roof leaks here come from summer downpours and, with about 48 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
10% of occupied homes in Fayette County heat mainly with wood or propane, above the Tennessee county median of 7.8%.
With 101 muggy nights a year, mold in Fayette County can appear within days of a leak. Dry first, then clean.
Local risk profile
Fayette County covers 704 square miles of southwest Tennessee, with about 43,267 residents and 18,494 homes. Somerville is the county seat; Oakland, Piperton and Rossville are the next largest communities. Much of its housing is recent, with a median build year of 1999.
28/100 Water Damage Risk Index: Moderate Fayette County ranks 90 of 95 Tennessee counties. See the statewide ranking and method.The three factors where Fayette County ranks highest compared with other Tennessee counties.
Winters here are on the gentler end for Tennessee, and pipes still freeze. From 2015–2024 it averaged 7 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 53 nights at or below 32°F. That ranks 87th of 95 counties.
On January 17, 2024 the low fell to about -2°F, and in the stretch ending February 2021 the county went 7 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
The freeze season here runs December to January, 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 7 and end around Mar 28.
Rainfall is about average for Tennessee. About 13.9 days a year bring an inch or more (52nd of 95), most often in March, out of 58.4 inches of total precipitation. On September 1, 2017, 5.67 inches fell in a single day. The worst three-day stretch dropped 7.19 inches, ending March 11, 2016, the kind of soaking that overwhelms sump pumps and storm sewers.
About 48 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
Tennessee's 95 counties range widely in housing age; Fayette ranks 89th, with 26% of its homes built before 1980.
Since 2000 the county has added enough housing that 47% of homes are that new. Modern PEX and copper rarely fail on their own; the leaks come from connections, appliances and storms.
About 26% 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.
Manufactured and mobile homes make up 10% of the housing here. Water lines in the underbelly depend on intact skirting and working heat tape, and they're usually the first to freeze in a cold snap.
Beyond water
Summer nights that don't drop below 65°F, a good marker of humid air, come about 101 times a year here, above the Tennessee county median of 74. Mold grows when indoor humidity stays above about 60%, the EPA's ceiling. A basement dehumidifier set to 50% and drying anything wet within 24 to 48 hours prevents most problems.
Mold remediation: what to expectHeating fuel matters for fire risk. In Fayette County it's 52% utility gas, 38% electric, 9% propane and 1% wood. Propane heat is more common here than the state median. Have chimneys swept and fuel-burning appliances serviced each fall, and keep three feet clear around stoves and space heaters.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Fayette County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Hardeman, Haywood and Tipton get more pipe-freeze nights than Fayette. All of its neighbors see more heavy-rain days. Haywood County has the oldest housing nearby, with 58% of homes built before 1980.
By the numbers
| Factor | Fayette | Tennessee median | Rank |
|---|---|---|---|
| Homes built before 1960 | 7% | 16% | 92 of 95 |
| Homes built before 1980 | 26% | 41% | 89 of 95 |
| Homes built 2000 or later | 47% | 27% | 4 of 95 |
| Manufactured or mobile homes | 9.6% | 16% | 75 of 95 |
| Vacant homes | 6.9% | 12% | 85 of 95 |
| Wood or propane heat | 9.8% | 7.8% | 41 of 95 |
| Nights at 20°F or colder | 7/yr | 11/yr | 87 of 95 |
| Days with 1 inch+ of rain | 14/yr | 14/yr | 52 of 95 |
| Freeze-thaw days | 48/yr | 60/yr | 92 of 95 |
| Muggy nights (65°F+) | 101/yr | 74/yr | 4 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 Fayette County: freezing from December to January, 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