Nelson County, Kentucky · Bardstown
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Pipes freeze in Nelson County on about 20 nights a year, mostly December to February. Older homes, 13% of the stock here, are most at risk.
Basements flood here mostly in February. Nelson County averages 13.3 days a year with an inch of rain or more.
Backups often follow heavy rain, which Nelson County gets about 13.3 days a year, when storm water overloads sewer mains and pushes up through the lowest drain in the house.
Roof leaks here come from summer downpours and, with about 72 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
9% of occupied homes in Nelson County heat mainly with wood or propane, below the Kentucky county median of 12.6%.
About 64 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 20,330 homes and around 47,606 residents, Nelson County is 419 square miles of central Kentucky. The county seat is Bardstown, and Bloomfield, New Haven and Chaplin round out the largest towns. Much of its housing is recent, with a median build year of 1992.
51/100 Water Damage Risk Index: Elevated Nelson County ranks 65 of 120 Kentucky counties. See the statewide ranking and method.The three factors where Nelson County ranks highest compared with other Kentucky counties.
For frozen pipes, Nelson County is a typical Kentucky county, which is still plenty. It averaged 82 freezing nights a year over 2015–2024, 20 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 120 Kentucky counties that's 50th.
Cold snaps are the real risk. The worst in the record lasted 8 days below freezing (ending January 2018), and the low bottomed out near -10°F on February 20, 2015.
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 10.
Heavy rain is a bigger factor here than in most of Kentucky. The county gets about 54.3 inches of rain and melted snow a year, with 13.3 days of an inch or more (31st of 120). Those downpours cluster in February, June and July, when sump pumps and gutters are tested hardest. The wettest day on record brought 4.06 inches on September 2, 2017. Multi-day storms matter most for basements; the wettest three days on record here totaled 5.21 inches (through September 3, 2017).
The temperature crosses 32°F in both directions on roughly 72 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
34% of homes in Nelson County predate 1980, below the Kentucky county median of 44.1%, which ranks 104th of Kentucky's 120 counties.
36% of homes were built in 2000 or later, more than in most of Kentucky. Newer plumbing rarely corrodes, so damage here tends to come from appliance supply lines, water heaters, sump pumps and storms.
The 1980s and 1990s account for 31% of the county's homes. If yours is from those decades, look under the sinks and at the water heater for gray plastic pipe stamped PB, which is polybutylene and leak-prone.
Beyond water
Nelson County averages 64 warm, muggy nights a year (lows of 65°F or more) and gets the most rain in July. 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 expectBy main heating fuel, Nelson County homes break down as 13% utility gas, 75% electric, 8% propane and 2% wood. Fires here are likelier to start in the kitchen or the wiring than in the furnace. After any fire, keep the HVAC off until ducts are checked, or soot will travel through the house.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Nelson County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Anderson, Hardin, Larue and Spencer get more pipe-freeze nights than Nelson. It also has the most heavy-rain days in its area. Washington County has the oldest housing nearby, with 48% of homes built before 1980.
By the numbers
| Factor | Nelson | Kentucky median | Rank |
|---|---|---|---|
| Homes built before 1960 | 13% | 18% | 94 of 120 |
| Homes built before 1980 | 34% | 44% | 104 of 120 |
| Homes built 2000 or later | 36% | 25% | 8 of 120 |
| Manufactured or mobile homes | 6% | 19% | 103 of 120 |
| Vacant homes | 5.8% | 13% | 114 of 120 |
| Wood or propane heat | 9% | 13% | 82 of 120 |
| Nights at 20°F or colder | 20/yr | 20/yr | 50 of 120 |
| Days with 1 inch+ of rain | 13/yr | 12/yr | 31 of 120 |
| Freeze-thaw days | 72/yr | 73/yr | 65 of 120 |
| Muggy nights (65°F+) | 64/yr | 59/yr | 34 of 120 |
Rank 1 is the highest value. Bars run from the lowest to the highest Kentucky county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Nelson County: freezing from December to February, heavy rain in February, June and July.
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