Logan County, West Virginia · Logan
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Pipes freeze in Logan County on about 18 nights a year, mostly December to February. Older homes, 27% of the stock here, are most at risk.
Basements flood here mostly in July. Logan County averages 7.4 days a year with an inch of rain or more.
Sewage backups in Logan County spike on heavy-rain days, about 7.4 a year, when sewer mains fill up and water finds the lowest drain.
Logan County's wettest day in the 2015–2024 record brought 3.03 inches, and about 75 freeze-thaw days a year mean ice dams in some winters.
2% of occupied homes in Logan County heat mainly with wood or propane, below the West Virginia county median of 10.1%.
About 44 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
About 31,418 people live in Logan County, 453 square miles in southwest West Virginia, in roughly 14,772 homes. The county seat is Logan, and Mallory, Mount Gay-Shamrock and Man round out the largest towns. The county's median home was built in 1982.
44/100 Water Damage Risk Index: Moderate Logan County ranks 36 of 55 West Virginia counties. See the statewide ranking and method.The three factors where Logan County ranks highest compared with other West Virginia counties.
Logan County is milder than most of West Virginia, but not mild enough to skip winterizing. From 2015–2024 it averaged 18 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 85 nights at or below 32°F. That ranks 52nd of 55 counties.
Cold snaps are the real risk. The worst in the record lasted 9 days below freezing (ending January 2018), and the low bottomed out near -13°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 Nov 5 and the last spring freeze around Apr 16.
Heavy rain is a bigger factor here than in most of West Virginia. About 7.4 days a year bring an inch or more (13th of 55), most often in July, out of 49.8 inches of total precipitation. On February 17, 2023, 3.03 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 4.09 inches (through July 29, 2022).
The temperature crosses 32°F in both directions on roughly 75 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
45% of homes in Logan County predate 1980, below the West Virginia county median of 55.1%, which ranks 44th of West Virginia's 55 counties.
Housing age is mixed: 27% of homes are pre-1960 and 19% are 2000 or newer. Ask any plumber which era your house is from and you'll know which failures to watch for.
36% 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.
22% of homes are manufactured or mobile homes, above the West Virginia county median of 16.2%. Their water lines run under the floor behind the skirting, so a torn skirt or failed heat tape freezes them faster than lines in a site-built house.
Beyond water
About 44 nights a year in Logan County stay at 65°F or warmer, a sign of muggy summer air (7th of 55 counties). July is the wettest month. 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 expectHeating fuel matters for fire risk. In Logan County it's 29% utility gas, 69% electric, under 1% propane and 1% 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 Logan County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Boone and Wyoming get more pipe-freeze nights than Logan. Wyoming County has the oldest housing nearby, with 63% of homes built before 1980.
By the numbers
| Factor | Logan | West Virginia median | Rank |
|---|---|---|---|
| Homes built before 1960 | 27% | 31% | 35 of 55 |
| Homes built before 1980 | 45% | 55% | 44 of 55 |
| Homes built 2000 or later | 19% | 17% | 22 of 55 |
| Manufactured or mobile homes | 22% | 16% | 15 of 55 |
| Vacant homes | 14% | 17% | 42 of 55 |
| Wood or propane heat | 2.3% | 10% | 55 of 55 |
| Nights at 20°F or colder | 18/yr | 25/yr | 52 of 55 |
| Days with 1 inch+ of rain | 7.4/yr | 6.8/yr | 13 of 55 |
| Freeze-thaw days | 75/yr | 89/yr | 54 of 55 |
| Muggy nights (65°F+) | 44/yr | 27/yr | 7 of 55 |
Rank 1 is the highest value. Bars run from the lowest to the highest West Virginia county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Logan County: freezing from December to February, heavy rain in January, May 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