Caroline County, Virginia · Bowling Green
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Caroline County averages 12 nights a year at 20°F or colder, mostly December to February, and 12% of its homes predate 1960.
Heavy rain days of an inch or more come about 9.1 times a year here, most often in October. A sump pump that hasn't run since last season is a common weak point.
12% 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 Caroline County, 4.39 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 Caroline County heat mainly with wood or propane, below the Virginia county median of 11.9%.
With 71 muggy nights a year, mold in Caroline County can appear within days of a leak. Dry first, then clean.
Local risk profile
Caroline County covers 527 square miles of eastern Virginia, with about 32,098 residents and 12,920 homes. Besides Bowling Green, the county seat, the biggest communities are Lake Land'Or, Lake Caroline and Port Royal. Much of its housing is recent, with a median build year of 1993.
35/100 Water Damage Risk Index: Moderate Caroline County ranks 87 of 95 Virginia counties. See the statewide ranking and method.The three factors where Caroline County ranks highest compared with other Virginia counties.
For frozen pipes, Caroline County is a typical Virginia county, which is still plenty. In the 2015–2024 record the county logged about 12 nights a year at or below 20°F (55th of 95) and 82 below freezing. Twenty degrees is roughly where uninsulated pipes start to freeze.
On January 7, 2018 the low fell to about -2°F, and in the stretch ending February 2016 the county went 4 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 December to February. That's when an outdoor spigot left connected to a hose, or a pipe in a crawl space, is most likely to split.
On average the first fall freeze arrives around Nov 6 and the last spring freeze around Apr 8.
Rainfall is about average for Virginia. About 9.1 days a year bring an inch or more (60th of 95), most often in October, out of 45.9 inches of total precipitation. On October 12, 2018, 4.39 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 5.39 inches (through May 19, 2018).
Freeze-thaw days, below freezing overnight and above it by afternoon, come about 78 times a year here. They're the main driver of ice dams and of water working its way through foundation cracks in late winter.
Housing
Virginia's 95 counties range widely in housing age; Caroline ranks 70th, with 34% of its homes built before 1980.
Growth since 2000 added 40% of today's homes. In houses that new, the weak points are washing machine hoses, ice maker lines, water heaters and sump pumps rather than the pipes in the walls.
About 26% 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.
Beyond water
Summer nights that don't drop below 65°F, a good marker of humid air, come about 71 times a year here, above 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 Caroline County it's 6% utility gas, 79% electric, 8% propane and 1% wood. Most homes here heat with gas or electricity, so cooking and electrical faults are the likelier fire sources. Even a contained kitchen fire can send soot through the ductwork to every room.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Caroline County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Spotsylvania and Stafford get more pipe-freeze nights than Caroline. Essex County has the oldest housing nearby, with 51% of homes built before 1980.
By the numbers
| Factor | Caroline | Virginia median | Rank |
|---|---|---|---|
| Homes built before 1960 | 12% | 20% | 78 of 95 |
| Homes built before 1980 | 34% | 46% | 70 of 95 |
| Homes built 2000 or later | 40% | 25% | 13 of 95 |
| Manufactured or mobile homes | 5.9% | 9.6% | 64 of 95 |
| Vacant homes | 7.2% | 15% | 74 of 95 |
| Wood or propane heat | 8.8% | 12% | 66 of 95 |
| Nights at 20°F or colder | 12/yr | 14/yr | 55 of 95 |
| Days with 1 inch+ of rain | 9.1/yr | 10/yr | 60 of 95 |
| Freeze-thaw days | 78/yr | 77/yr | 40 of 95 |
| Muggy nights (65°F+) | 71/yr | 64/yr | 39 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 Caroline County: freezing from December to February, heavy rain in June, 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