Macon County, Tennessee · Lafayette
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Pipes freeze in Macon County on about 15 nights a year, mostly December to February. Older homes, 14% of the stock here, are most at risk.
Heavy rain days of an inch or more come about 15.2 times a year here, most often in February. A sump pump that hasn't run since last season is a common weak point.
Sewage backups in Macon County spike on heavy-rain days, about 15.2 a year, when sewer mains fill up and water finds the lowest drain.
Roof leaks here come from summer downpours and, with about 68 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
14% of occupied homes in Macon County heat mainly with wood or propane, above the Tennessee county median of 7.8%.
With 65 muggy nights a year, mold in Macon County can appear within days of a leak. Dry first, then clean.
Local risk profile
With 10,997 homes and around 26,240 residents, Macon County is 307 square miles of northern Tennessee. Besides Lafayette, the county seat, the biggest community is Red Boiling Springs. Much of its housing is recent, with a median build year of 1991.
62/100 Water Damage Risk Index: Elevated Macon County ranks 14 of 95 Tennessee counties. See the statewide ranking and method.The three factors where Macon County ranks highest compared with other Tennessee counties.
Macon County gets more hard-freeze nights than most of Tennessee. It averaged 75 freezing nights a year over 2015–2024, 15 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 95 Tennessee counties that's 8th.
Cold snaps are the real risk. The worst in the record lasted 8 days below freezing (ending February 2021), and the low bottomed out near -6°F on January 17, 2024.
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 2 and end around Apr 11.
Heavy rain is a bigger factor here than in most of Tennessee. About 15.2 days a year bring an inch or more (23rd of 95), most often in February, out of 57.7 inches of total precipitation. On May 9, 2024, 4.17 inches fell in a single day. The worst three-day stretch dropped 5.49 inches, ending September 29, 2024, the kind of soaking that overwhelms sump pumps and storm sewers.
About 68 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; Macon ranks 61st, with 39% of its homes built before 1980.
Growth since 2000 added 32% 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.
About 30% 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.
Here 22% 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
Summer nights that don't drop below 65°F, a good marker of humid air, come about 65 times a year here, below 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 Macon County it's 12% utility gas, 73% electric, 8% propane and 6% wood. Wood heat is above the Tennessee norm. Annual chimney and vent inspection, which the NFPA recommends, is one of the most effective fire-prevention habits for these homes.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Macon County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Macon gets more pipe-freeze nights than any of its neighbors. It also has the most heavy-rain days in its area. Smith County has the oldest housing nearby, with 43% of homes built before 1980.
By the numbers
| Factor | Macon | Tennessee median | Rank |
|---|---|---|---|
| Homes built before 1960 | 14% | 16% | 60 of 95 |
| Homes built before 1980 | 39% | 41% | 61 of 95 |
| Homes built 2000 or later | 32% | 27% | 27 of 95 |
| Manufactured or mobile homes | 22% | 16% | 21 of 95 |
| Vacant homes | 14% | 12% | 32 of 95 |
| Wood or propane heat | 14% | 7.8% | 23 of 95 |
| Nights at 20°F or colder | 15/yr | 11/yr | 8 of 95 |
| Days with 1 inch+ of rain | 15/yr | 14/yr | 23 of 95 |
| Freeze-thaw days | 68/yr | 60/yr | 16 of 95 |
| Muggy nights (65°F+) | 65/yr | 74/yr | 65 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 Macon County: freezing from December to February, heavy rain in February, June 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