Llano County, Texas · Llano
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Pipes freeze in Llano County on about 2 nights a year, mostly midwinter. Older homes, 7% of the stock here, are most at risk.
Basements flood here mostly in May. Llano County averages 6.4 days a year with an inch of rain or more.
7% 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.
Llano County's wettest day in the 2015–2024 record brought 4.48 inches, and about 23 freeze-thaw days a year mean ice dams in some winters.
6% of occupied homes in Llano County heat mainly with wood or propane, close to the Texas county median of 6.5%.
Muggy summer nights, lows of 65°F or more, come about 138 times a year in Llano County. Mold after a leak spreads fastest from June through August.
Local risk profile
Llano County covers 934 square miles of central Texas, with about 22,424 residents and 15,788 homes. The county seat is Llano, and Kingsland, Horseshoe Bay and Buchanan Dam round out the largest towns. Much of its housing is recent, with a median build year of 1990.
34/100 Water Damage Risk Index: Moderate Llano County ranks 216 of 232 Texas counties. See the statewide ranking and method.The three factors where Llano County ranks highest compared with other Texas counties.
Pipe-freeze risk in Llano County sits near the middle of the state. It averaged 24 freezing nights a year over 2015–2024, 2 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 232 Texas counties that's 126th.
Cold snaps are the real risk. The worst in the record lasted 7 days below freezing (ending February 2021), and the low bottomed out near 4°F on February 16, 2021.
Hard freezes are uncommon here, about 24 nights a year at or below 32°F, and that's exactly why they do damage: pipes in attics, exterior walls and slab-edge plumbing are rarely insulated. The coldest night in the record was about 4°F on February 16, 2021.
Rainfall is about average for Texas. Of roughly 28.4 inches of yearly precipitation, the damage comes from the 6.4 days a year with an inch or more, ranked 137th of 232. May, September and October see the most. The single wettest day in the record: 4.48 inches, August 7, 2017. The worst three-day stretch dropped 7.14 inches, ending October 17, 2018, the kind of soaking that overwhelms sump pumps and storm sewers.
Freeze-thaw days, below freezing overnight and above it by afternoon, come about 23 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
33% of homes in Llano County predate 1980, below the Texas county median of 45.8%, which ranks 184th of Texas's 232 counties.
34% of homes were built in 2000 or later, more than in most of Texas. Newer plumbing rarely corrodes, so damage here tends to come from appliance supply lines, water heaters, sump pumps and storms.
33% 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 12% 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.
With 32% of homes empty at survey time, landlords and seasonal owners should shut off the main or schedule checks in winter. An unheated vacant house is also where many policies limit freeze coverage.
Beyond water
Summer nights that don't drop below 65°F, a good marker of humid air, come about 138 times a year here, close to the Texas county median of 129. 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, Llano County homes break down as 3% utility gas, 90% electric, 5% propane and 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 Llano County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Mason gets more pipe-freeze nights than Llano. Mason County has the oldest housing nearby, with 54% of homes built before 1980.
By the numbers
| Factor | Llano | Texas median | Rank |
|---|---|---|---|
| Homes built before 1960 | 7.4% | 20% | 206 of 232 |
| Homes built before 1980 | 33% | 46% | 184 of 232 |
| Homes built 2000 or later | 34% | 26% | 63 of 232 |
| Manufactured or mobile homes | 12% | 13% | 143 of 232 |
| Vacant homes | 32% | 17% | 11 of 232 |
| Wood or propane heat | 6.2% | 6.5% | 121 of 232 |
| Nights at 20°F or colder | 2/yr | 3/yr | 126 of 232 |
| Days with 1 inch+ of rain | 6.4/yr | 7.8/yr | 137 of 232 |
| Freeze-thaw days | 23/yr | 27/yr | 129 of 232 |
| Muggy nights (65°F+) | 138/yr | 129/yr | 90 of 232 |
Rank 1 is the highest value. Bars run from the lowest to the highest Texas county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Llano County: freezing from midwinter, heavy rain in May, September 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