Amherst County, Virginia · Amherst
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Pipes freeze in Amherst County on about 14 nights a year, mostly December to February. Older homes, 23% of the stock here, are most at risk.
Heavy rain days of an inch or more come about 12.8 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 Amherst County spike on heavy-rain days, about 12.8 a year, when sewer mains fill up and water finds the lowest drain.
Roof leaks here come from summer downpours and, with about 75 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
7% of occupied homes in Amherst County heat mainly with wood or propane, below the Virginia county median of 11.9%.
With 54 muggy nights a year, mold in Amherst County can appear within days of a leak. Dry first, then clean.
Local risk profile
About 31,485 people live in Amherst County, 474 square miles in central Virginia, in roughly 14,364 homes. The county seat is Amherst, and Madison Heights is the other large town. Half the homes here were built before 1978, half after.
63/100 Water Damage Risk Index: Elevated Amherst County ranks 9 of 95 Virginia counties. See the statewide ranking and method.The three factors where Amherst County ranks highest compared with other Virginia counties.
Pipe-freeze risk in Amherst County sits near the middle of the state. From 2015–2024 it averaged 14 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 81 nights at or below 32°F. That ranks 45th of 95 counties.
Cold snaps are the real risk. The worst in the record lasted 8 days below freezing (ending January 2018), and the low bottomed out near -2°F on February 20, 2015.
The freeze season here runs December to February, 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 3 and end around Apr 7.
Heavy rain is a bigger factor here than in most of Virginia. Of roughly 50.7 inches of yearly precipitation, the damage comes from the 12.8 days a year with an inch or more, ranked 4th of 95. September, October and November see the most. The single wettest day in the record: 4.45 inches, August 9, 2024. The worst three-day stretch dropped 5.36 inches, ending November 13, 2020, the kind of soaking that overwhelms sump pumps and storm sewers.
About 75 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
53% of homes in Amherst County predate 1980, above the Virginia county median of 46.2%, which ranks 20th of Virginia's 95 counties.
Older and newer homes sit side by side here: 23% predate 1960 and 18% are from 2000 or later. Corroded pipe is the typical failure in the first group, burst supply hoses in the second.
The 1980s and 1990s account for 29% 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.
12% of homes are manufactured or mobile homes, above the Virginia county median of 9.6%. Their water lines run under the floor behind the skirting, so a torn skirt or failed heat tape freezes them faster than lines in a site-built house.
Beyond water
Amherst County averages 54 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 expectMain heating fuel in Amherst County's occupied homes: 1% utility gas, 86% electric, 3% propane and 3% 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 Amherst County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Nelson and Rockbridge get more pipe-freeze nights than Amherst. Its housing is the oldest in the area by share of homes built before 1980.
By the numbers
| Factor | Amherst | Virginia median | Rank |
|---|---|---|---|
| Homes built before 1960 | 23% | 20% | 39 of 95 |
| Homes built before 1980 | 53% | 46% | 20 of 95 |
| Homes built 2000 or later | 18% | 25% | 78 of 95 |
| Manufactured or mobile homes | 12% | 9.6% | 43 of 95 |
| Vacant homes | 12% | 15% | 57 of 95 |
| Wood or propane heat | 6.5% | 12% | 80 of 95 |
| Nights at 20°F or colder | 14/yr | 14/yr | 45 of 95 |
| Days with 1 inch+ of rain | 13/yr | 10/yr | 4 of 95 |
| Freeze-thaw days | 75/yr | 77/yr | 53 of 95 |
| Muggy nights (65°F+) | 54/yr | 64/yr | 58 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 Amherst County: freezing from December to February, heavy rain in September, October 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