Wake County, North Carolina · Raleigh
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Pipes freeze in Wake County on about 5 nights a year, mostly December to January. Older homes, 5% of the stock here, are most at risk.
Heavy rain days of an inch or more come about 11.4 times a year here, most often in September. A sump pump that hasn't run since last season is a common weak point.
Sewage backups in Wake County spike on heavy-rain days, about 11.4 a year, when sewer mains fill up and water finds the lowest drain.
Roof leaks here come from summer downpours and, with about 54 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
3% of occupied homes in Wake County heat mainly with wood or propane, below the North Carolina county median of 11.7%.
With 90 muggy nights a year, mold in Wake County can appear within days of a leak. Dry first, then clean.
Local risk profile
With 496,047 homes and around 1,178,653 residents, Wake County is 835 square miles of northern North Carolina. Besides Raleigh, the county seat, the biggest communities are Cary, Apex and Wake Forest. Much of its housing is recent, with a median build year of 2000.
33/100 Water Damage Risk Index: Moderate Wake County ranks 91 of 100 North Carolina counties. See the statewide ranking and method.The three factors where Wake County ranks highest compared with other North Carolina counties.
Pipe-freeze risk in Wake County sits near the middle of the state. It averaged 55 freezing nights a year over 2015–2024, 5 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 100 North Carolina counties that's 50th.
The longest cold spell was straight 3 days without the temperature rising above freezing, ending in January 2018. The coldest night reached about 6°F on January 7, 2018. Burst pipes usually show up when a spell like that breaks and the ice thaws.
The freeze season here runs December to January, 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 11 and end around Mar 24.
Rainfall is about average for North Carolina. Of roughly 51.5 inches of yearly precipitation, the damage comes from the 11.4 days a year with an inch or more, ranked 54th of 100. April, September and December see the most. The single wettest day in the record: 5.44 inches, October 9, 2016. The worst three-day stretch dropped 7.5 inches, ending October 9, 2016, the kind of soaking that overwhelms sump pumps and storm sewers.
About 54 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
18% of homes in Wake County predate 1980, below the North Carolina county median of 41.2%, which ranks 98th of North Carolina's 100 counties.
Since 2000 the county has added enough housing that 50% of homes are that new. Modern PEX and copper rarely fail on their own; the leaks come from connections, appliances and storms.
The 1980s and 1990s account for 32% 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.
Renters occupy 36% of homes. If you rent, the building is usually the landlord's to repair, but your belongings are only covered by renters insurance.
Beyond water
Wake County averages 90 warm, muggy nights a year (lows of 65°F or more) and gets the most rain in September. 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 expectHeating fuel matters for fire risk. In Wake County it's 42% utility gas, 55% electric, 3% propane and under 1% wood. Fires here are likelier to start in the kitchen or the wiring than in the furnace. After any fire, keep the HVAC off until ducts are checked, or soot will travel through the house.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Wake County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Durham, Franklin and Granville get more pipe-freeze nights than Wake. It also has the most heavy-rain days in its area. Granville County has the oldest housing nearby, with 33% of homes built before 1980.
By the numbers
| Factor | Wake | North Carolina median | Rank |
|---|---|---|---|
| Homes built before 1960 | 5.3% | 18% | 99 of 100 |
| Homes built before 1980 | 18% | 41% | 98 of 100 |
| Homes built 2000 or later | 50% | 26% | 2 of 100 |
| Manufactured or mobile homes | 2.7% | 17% | 97 of 100 |
| Vacant homes | 7.2% | 13% | 96 of 100 |
| Wood or propane heat | 2.7% | 12% | 96 of 100 |
| Nights at 20°F or colder | 5/yr | 5/yr | 50 of 100 |
| Days with 1 inch+ of rain | 11/yr | 12/yr | 54 of 100 |
| Freeze-thaw days | 54/yr | 57/yr | 55 of 100 |
| Muggy nights (65°F+) | 90/yr | 89/yr | 46 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 Wake County: freezing from December to January, heavy rain in April, September and December.
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