Botetourt County, Virginia · Fincastle
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Botetourt County averages 17 nights a year at 20°F or colder, mostly November to March, and 19% of its homes predate 1960.
Heavy rain days of an inch or more come about 10.3 times a year here, most often in September. A sump pump that hasn't run since last season is a common weak point.
Backups often follow heavy rain, which Botetourt County gets about 10.3 days a year, when storm water overloads sewer mains and pushes up through the lowest drain in the house.
In Botetourt County, 3.19 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
11% of occupied homes in Botetourt County heat mainly with wood or propane, close to the Virginia county median of 11.9%.
Muggy summer nights, lows of 65°F or more, come about 45 times a year in Botetourt County. Mold after a leak spreads fastest from June through August.
Local risk profile
Botetourt County covers 541 square miles of central Virginia, with about 34,004 residents and 15,069 homes. Fincastle is the county seat; Daleville, Cloverdale and Blue Ridge are the next largest communities. Half the homes here were built before 1984, half after.
54/100 Water Damage Risk Index: Elevated Botetourt County ranks 35 of 95 Virginia counties. See the statewide ranking and method.The three factors where Botetourt County ranks highest compared with other Virginia counties.
Botetourt County gets more hard-freeze nights than most of Virginia. From 2015–2024 it averaged 17 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 86 nights at or below 32°F. That ranks 31st of 95 counties.
The longest cold spell was straight 8 days without the temperature rising above freezing, ending in January 2018. The coldest night reached about -1°F on February 21, 2015. Burst pipes usually show up when a spell like that breaks and the ice thaws.
The freeze season here runs November to March, with January the coldest. If you travel then, leave the thermostat at 55°F or above and open sink cabinets on outside walls.
Freezing nights typically start around Nov 3 and end around Apr 14.
Rainfall is about average for Virginia. Of roughly 47.1 inches of yearly precipitation, the damage comes from the 10.3 days a year with an inch or more, ranked 38th of 95. May, September and October see the most. The single wettest day in the record: 3.19 inches, August 9, 2024. The worst three-day stretch dropped 4.33 inches, ending October 1, 2016, the kind of soaking that overwhelms sump pumps and storm sewers.
The temperature crosses 32°F in both directions on roughly 79 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
Virginia's 95 counties range widely in housing age; Botetourt ranks 52nd, with 45% of its homes built before 1980.
Older and newer homes sit side by side here: 19% predate 1960 and 25% are from 2000 or later. Corroded pipe is the typical failure in the first group, burst supply hoses in the second.
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 8% 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.
Beyond water
Summer nights that don't drop below 65°F, a good marker of humid air, come about 45 times a year here, below the Virginia county median of 64. 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 Botetourt County it's 17% utility gas, 66% electric, 6% propane and 5% wood. Wood heat is above the Virginia 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 Botetourt County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Alleghany, Craig and Rockbridge get more pipe-freeze nights than Botetourt. Alleghany County has the oldest housing nearby, with 64% of homes built before 1980.
By the numbers
| Factor | Botetourt | Virginia median | Rank |
|---|---|---|---|
| Homes built before 1960 | 19% | 20% | 52 of 95 |
| Homes built before 1980 | 45% | 46% | 52 of 95 |
| Homes built 2000 or later | 25% | 25% | 51 of 95 |
| Manufactured or mobile homes | 7.9% | 9.6% | 60 of 95 |
| Vacant homes | 12% | 15% | 54 of 95 |
| Wood or propane heat | 11% | 12% | 55 of 95 |
| Nights at 20°F or colder | 17/yr | 14/yr | 31 of 95 |
| Days with 1 inch+ of rain | 10/yr | 10/yr | 38 of 95 |
| Freeze-thaw days | 79/yr | 77/yr | 37 of 95 |
| Muggy nights (65°F+) | 45/yr | 64/yr | 62 of 95 |
Rank 1 is the highest value. Bars run from the lowest to the highest Virginia county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Botetourt County: freezing from November to March, heavy rain in May, September and October.
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