Surry County, North Carolina · Dobson
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Surry County averages 10 nights a year at 20°F or colder, mostly December to February, and 23% of its homes predate 1960.
Heavy rain days of an inch or more come about 13.3 times a year here, most often in May. 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 Surry County, 3.85 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 Surry County heat mainly with wood or propane, close to the North Carolina county median of 11.7%.
Muggy summer nights, lows of 65°F or more, come about 52 times a year in Surry County. Mold after a leak spreads fastest from June through August.
Local risk profile
With 33,747 homes and around 71,425 residents, Surry County is 533 square miles of northern North Carolina. The county seat is Dobson, and Mount Airy, Elkin and Pilot Mountain round out the largest towns. The county's median home was built in 1979.
71/100 Water Damage Risk Index: High Surry County ranks 2 of 100 North Carolina counties. See the statewide ranking and method.The three factors where Surry County ranks highest compared with other North Carolina counties.
Surry is on the colder side of North Carolina for pipes. From 2015–2024 it averaged 10 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 77 nights at or below 32°F. That ranks 19th of 100 counties.
On February 20, 2015 the low fell to about 0°F, and in the stretch ending January 2018 the county went 5 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
Most freezing nights fall from December to February, 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 Nov 3 and the last spring freeze around Apr 9.
Heavy rain is a bigger factor here than in most of North Carolina. About 13.3 days a year bring an inch or more (25th of 100), most often in May, out of 55.3 inches of total precipitation. On September 17, 2018, 3.85 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 5.64 inches (through April 25, 2017).
Freeze-thaw days, below freezing overnight and above it by afternoon, come about 74 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
Roughly 51% of the county's housing was built before 1980. That puts Surry among the oldest housing stocks of North Carolina's 100 counties.
Before 1960 is when 23% of these homes went up. Galvanized supply lines and cast iron drains were standard then, and after 60-plus years both corrode and crack, often out of sight inside a wall or under a slab.
32% 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.
Manufactured and mobile homes make up 23% of the housing here. Water lines in the underbelly depend on intact skirting and working heat tape, and they're usually the first to freeze in a cold snap.
Beyond water
Summer nights that don't drop below 65°F, a good marker of humid air, come about 52 times a year here, below the North Carolina county median of 88.5. 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 expectBy main heating fuel, Surry County homes break down as 3% utility gas, 74% electric, 8% propane and 4% wood. Wood heat is above the North Carolina 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 Surry County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Alleghany gets more pipe-freeze nights than Surry. Its housing is the oldest in the area by share of homes built before 1980.
By the numbers
| Factor | Surry | North Carolina median | Rank |
|---|---|---|---|
| Homes built before 1960 | 23% | 18% | 17 of 100 |
| Homes built before 1980 | 51% | 41% | 11 of 100 |
| Homes built 2000 or later | 17% | 26% | 89 of 100 |
| Manufactured or mobile homes | 23% | 17% | 27 of 100 |
| Vacant homes | 12% | 13% | 66 of 100 |
| Wood or propane heat | 11% | 12% | 53 of 100 |
| Nights at 20°F or colder | 10/yr | 5/yr | 19 of 100 |
| Days with 1 inch+ of rain | 13/yr | 12/yr | 25 of 100 |
| Freeze-thaw days | 74/yr | 57/yr | 17 of 100 |
| Muggy nights (65°F+) | 52/yr | 89/yr | 80 of 100 |
Rank 1 is the highest value. Bars run from the lowest to the highest North Carolina county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Surry County: freezing from December to February, heavy rain in May, August 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