Harlan County, Kentucky · Harlan
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Harlan County averages 22 nights a year at 20°F or colder, mostly November to March, and 30% of its homes predate 1960.
Basements flood here mostly in February. Harlan County averages 10.9 days a year with an inch of rain or more.
Sewage backups in Harlan County spike on heavy-rain days, about 10.9 a year, when sewer mains fill up and water finds the lowest drain.
Roof leaks here come from summer downpours and, with about 82 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
8% of occupied homes in Harlan County heat mainly with wood or propane, below the Kentucky county median of 12.6%.
With 23 muggy nights a year, mold in Harlan County can appear within days of a leak. Dry first, then clean.
Local risk profile
About 25,772 people live in Harlan County, 466 square miles in southeast Kentucky, in roughly 13,036 homes. Besides Harlan, the county seat, the biggest communities are Cumberland, South Wallins and Benham. Half the homes here were built before 1976, half after.
61/100 Water Damage Risk Index: Elevated Harlan County ranks 24 of 120 Kentucky counties. See the statewide ranking and method.The three factors where Harlan County ranks highest compared with other Kentucky counties.
Harlan County gets more hard-freeze nights than most of Kentucky. From 2015–2024 it averaged 22 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 94 nights at or below 32°F. That ranks 16th of 120 counties.
On February 20, 2015 the low fell to about -13°F, and in the stretch ending January 2018 the county went 8 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 November to March. 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 Oct 25 and end around Apr 20.
Rainfall is about average for Kentucky. The county gets about 56.6 inches of rain and melted snow a year, with 10.9 days of an inch or more (77th of 120). Those downpours cluster in February, July and December, when sump pumps and gutters are tested hardest. The wettest day on record brought 3.26 inches on February 11, 2018. The worst three-day stretch dropped 5.07 inches, ending September 28, 2024, the kind of soaking that overwhelms sump pumps and storm sewers.
The temperature crosses 32°F in both directions on roughly 82 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
Kentucky's 120 counties range widely in housing age; Harlan ranks 14th, with 57% of its homes built before 1980.
Before 1960 is when 30% of these homes went up. Galvanized supply lines and cast iron drains were standard then, and after 60-plus years both corrode and crack, often out of sight inside a wall or under a slab.
The 1980s and 1990s account for 29% 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.
Here 19% 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.
18% 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
About 23 nights a year in Harlan County stay at 65°F or warmer, a sign of muggy summer air (120th of 120 counties). February is the wettest month. 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 expectBy main heating fuel, Harlan County homes break down as 3% utility gas, 85% electric, 5% propane and 3% 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 Harlan County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Harlan gets more pipe-freeze nights than any of its neighbors. Its housing is the oldest in the area by share of homes built before 1980.
By the numbers
| Factor | Harlan | Kentucky median | Rank |
|---|---|---|---|
| Homes built before 1960 | 30% | 18% | 6 of 120 |
| Homes built before 1980 | 57% | 44% | 14 of 120 |
| Homes built 2000 or later | 15% | 25% | 116 of 120 |
| Manufactured or mobile homes | 19% | 19% | 55 of 120 |
| Vacant homes | 18% | 13% | 24 of 120 |
| Wood or propane heat | 8% | 13% | 85 of 120 |
| Nights at 20°F or colder | 22/yr | 20/yr | 16 of 120 |
| Days with 1 inch+ of rain | 11/yr | 12/yr | 77 of 120 |
| Freeze-thaw days | 82/yr | 73/yr | 12 of 120 |
| Muggy nights (65°F+) | 23/yr | 59/yr | 120 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 Harlan County: freezing from November to March, heavy rain in February, July 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