Cannon County, Tennessee · Woodbury
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Cannon County averages 12 nights a year at 20°F or colder, mostly December to February, and 18% of its homes predate 1960.
February brings the most downpours to Cannon County, part of 15.8 heavy-rain days a year. Check the sump first.
18% 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.
In Cannon County, 4.6 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
9% of occupied homes in Cannon County heat mainly with wood or propane, above the Tennessee county median of 7.8%.
Muggy summer nights, lows of 65°F or more, come about 67 times a year in Cannon County. Mold after a leak spreads fastest from June through August.
Local risk profile
About 14,818 people live in Cannon County, 266 square miles in central Tennessee, in roughly 6,453 homes. Woodbury is the county seat; Auburntown is the next largest community. Much of its housing is recent, with a median build year of 1990.
63/100 Water Damage Risk Index: Elevated Cannon County ranks 12 of 95 Tennessee counties. See the statewide ranking and method.The three factors where Cannon County ranks highest compared with other Tennessee counties.
Cannon is on the colder side of Tennessee for pipes. From 2015–2024 it averaged 12 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 69 nights at or below 32°F. That ranks 31st of 95 counties.
On January 17, 2024 the low fell to about -8°F, and in the stretch ending February 2015 the county went 3 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
The freeze season here runs December to February, with January the coldest. If you travel then, leave the thermostat at 55°F or above and open sink cabinets on outside walls.
On average the first fall freeze arrives around Oct 31 and the last spring freeze around Apr 4.
Heavy rain is a bigger factor here than in most of Tennessee. About 15.8 days a year bring an inch or more (13th of 95), most often in February, out of 61.1 inches of total precipitation. On March 28, 2021, 4.6 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 6.21 inches (through March 28, 2021).
The temperature crosses 32°F in both directions on roughly 64 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 39% of the county's housing was built before 1980. That puts Cannon near the middle of Tennessee's 95 counties.
Housing age is mixed: 18% of homes are pre-1960 and 28% are 2000 or newer. Ask any plumber which era your house is from and you'll know which failures to watch for.
33% date from 1980 to 1999, the window when polybutylene, a gray flexible plastic supply pipe, was used in some homes. It's prone to leaks at the fittings, so it's worth checking for in a house from those years.
Manufactured and mobile homes make up 16% 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
Cannon County averages 67 warm, muggy nights a year (lows of 65°F or more) and gets the most rain in February. 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 expectMain heating fuel in Cannon County's occupied homes: 25% utility gas, 65% electric, 5% propane and 3% wood. Wood 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 Cannon County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Cannon gets more pipe-freeze nights than any of its neighbors. Warren County has the oldest housing nearby, with 52% of homes built before 1980.
By the numbers
| Factor | Cannon | Tennessee median | Rank |
|---|---|---|---|
| Homes built before 1960 | 18% | 16% | 39 of 95 |
| Homes built before 1980 | 39% | 41% | 60 of 95 |
| Homes built 2000 or later | 28% | 27% | 45 of 95 |
| Manufactured or mobile homes | 16% | 16% | 46 of 95 |
| Vacant homes | 11% | 12% | 56 of 95 |
| Wood or propane heat | 8.6% | 7.8% | 47 of 95 |
| Nights at 20°F or colder | 12/yr | 11/yr | 31 of 95 |
| Days with 1 inch+ of rain | 16/yr | 14/yr | 13 of 95 |
| Freeze-thaw days | 64/yr | 60/yr | 32 of 95 |
| Muggy nights (65°F+) | 67/yr | 74/yr | 59 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 Cannon 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