Rockingham County, Virginia · Harrisonburg
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With 21% of homes built before 1960 and about 24 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 7.8 times a year here, most often in September. A sump pump that hasn't run since last season is a common weak point.
21% 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 Rockingham County, 4.9 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 Rockingham 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 21 times a year in Rockingham County. Mold after a leak spreads fastest from June through August.
Local risk profile
With 36,550 homes and around 85,600 residents, Rockingham County is 850 square miles of northern Virginia. Besides Harrisonburg, the county seat, the biggest communities are Bridgewater, Massanetta Springs and Broadway. Much of its housing is recent, with a median build year of 1986.
49/100 Water Damage Risk Index: Elevated Rockingham County ranks 53 of 95 Virginia counties. See the statewide ranking and method.The three factors where Rockingham County ranks highest compared with other Virginia counties.
Rockingham is on the colder side of Virginia for pipes. It averaged 102 freezing nights a year over 2015–2024, 24 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 95 Virginia counties that's 7th.
On January 7, 2018 the low fell to about -2°F, and in the stretch ending February 2015 the county went 6 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 27 and the last spring freeze around Apr 22.
Rockingham gets fewer downpours than most Virginia counties, but they still fill basements. About 7.8 days a year bring an inch or more (82nd of 95), most often in September, out of 43.5 inches of total precipitation. On August 9, 2024, 4.9 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 5.47 inches (through August 10, 2024).
About 93 days a year swing from below freezing at night to above freezing by day. Those freeze-thaw cycles feed ice dams on roofs, open cracks in foundations and driveways, and stress pipes that are already marginal.
Housing
42% of homes in Rockingham County predate 1980, below the Virginia county median of 46.2%, which ranks 55th of Virginia's 95 counties.
30% of homes were built in 2000 or later, more than in most of Virginia. Newer plumbing rarely corrodes, so damage here tends to come from appliance supply lines, water heaters, sump pumps and storms.
28% 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.
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 21 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, Rockingham County homes break down as 4% utility gas, 65% electric, 11% propane and 8% 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 Rockingham 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 Rockingham. Page County has the oldest housing nearby, with 60% of homes built before 1980.
By the numbers
| Factor | Rockingham | Virginia median | Rank |
|---|---|---|---|
| Homes built before 1960 | 21% | 20% | 45 of 95 |
| Homes built before 1980 | 42% | 46% | 55 of 95 |
| Homes built 2000 or later | 30% | 25% | 30 of 95 |
| Manufactured or mobile homes | 8.3% | 9.6% | 58 of 95 |
| Vacant homes | 11% | 15% | 64 of 95 |
| Wood or propane heat | 19% | 12% | 22 of 95 |
| Nights at 20°F or colder | 24/yr | 14/yr | 7 of 95 |
| Days with 1 inch+ of rain | 7.8/yr | 10/yr | 82 of 95 |
| Freeze-thaw days | 93/yr | 77/yr | 8 of 95 |
| Muggy nights (65°F+) | 21/yr | 64/yr | 79 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 Rockingham County: freezing from November to March, heavy rain in June, September and November.
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