Shenandoah County, Virginia · Woodstock
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With 23% of homes built before 1960 and about 25 hard-freeze nights a year, frozen and split pipes are a leading winter risk in the county.
Heavy rain days of an inch or more come about 6.5 times a year here, most often in September. A sump pump that hasn't run since last season is a common weak point.
23% 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 Shenandoah County, 4.81 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
19% of occupied homes in Shenandoah County heat mainly with wood or propane, above the Virginia county median of 11.9%.
Muggy summer nights, lows of 65°F or more, come about 22 times a year in Shenandoah County. Mold after a leak spreads fastest from June through August.
Local risk profile
About 44,925 people live in Shenandoah County, 508 square miles in northern Virginia, in roughly 21,395 homes. The county seat is Woodstock, and Strasburg, New Market and Mount Jackson round out the largest towns. The county's median home was built in 1983.
49/100 Water Damage Risk Index: Elevated Shenandoah County ranks 54 of 95 Virginia counties. See the statewide ranking and method.The three factors where Shenandoah County ranks highest compared with other Virginia counties.
Shenandoah is on the colder side of Virginia for pipes. In the 2015–2024 record the county logged about 25 nights a year at or below 20°F (5th of 95) and 104 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 January 2018 the county went 12 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
Most freezing nights fall from November to March, peaking in January. Disconnect garden hoses and shut off outdoor spigots before the first hard frost, and keep the heat at 55°F or higher if you'll be away.
On average the first fall freeze arrives around Oct 24 and the last spring freeze around Apr 22.
Shenandoah gets fewer downpours than most Virginia counties, but they still fill basements. The county gets about 39.7 inches of rain and melted snow a year, with 6.5 days of an inch or more (95th of 95). Those downpours cluster in January, June and September, when sump pumps and gutters are tested hardest. The wettest day on record brought 4.81 inches on August 9, 2024. Multi-day storms matter most for basements; the wettest three days on record here totaled 5.6 inches (through August 10, 2024).
Freeze-thaw days, below freezing overnight and above it by afternoon, come about 95 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; Shenandoah ranks 47th, with 46% of its homes built before 1980.
The mix runs from 23% built before 1960 to 27% built since 2000, so older neighborhoods bring aging pipe while newer subdivisions bring failed appliance lines and water heaters.
The 1980s and 1990s account for 27% 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
Summer nights that don't drop below 65°F, a good marker of humid air, come about 22 times a year here, below the Virginia county median of 64. The EPA recommends keeping indoor humidity below 60%, ideally 30 to 50%. Basements can pass 60% on their own in summer, so a dehumidifier matters even without a leak, and anything wet should be dried within 24 to 48 hours.
Mold remediation: what to expectBy main heating fuel, Shenandoah County homes break down as 6% utility gas, 62% electric, 11% propane and 8% wood. Wood heat is more common here than in most Virginia counties. Heating equipment is one of the leading causes of home fires nationally, and the NFPA recommends having chimneys and vents inspected every year.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Shenandoah County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Shenandoah gets more pipe-freeze nights than any of its neighbors. All of its neighbors see more heavy-rain days. Page County has the oldest housing nearby, with 60% of homes built before 1980.
By the numbers
| Factor | Shenandoah | Virginia median | Rank |
|---|---|---|---|
| Homes built before 1960 | 23% | 20% | 39 of 95 |
| Homes built before 1980 | 46% | 46% | 47 of 95 |
| Homes built 2000 or later | 27% | 25% | 40 of 95 |
| Manufactured or mobile homes | 4% | 9.6% | 72 of 95 |
| Vacant homes | 16% | 15% | 43 of 95 |
| Wood or propane heat | 19% | 12% | 21 of 95 |
| Nights at 20°F or colder | 25/yr | 14/yr | 5 of 95 |
| Days with 1 inch+ of rain | 6.5/yr | 10/yr | 95 of 95 |
| Freeze-thaw days | 95/yr | 77/yr | 3 of 95 |
| Muggy nights (65°F+) | 22/yr | 64/yr | 76 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 Shenandoah County: freezing from November to March, heavy rain in January, June and September.
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