Atascosa County, Texas · Jourdanton
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Atascosa County averages 0 nights a year at 20°F or colder, mostly midwinter, and 12% of its homes predate 1960.
Basements flood here mostly in May. Atascosa County averages 7 days a year with an inch of rain or more.
Backups often follow heavy rain, which Atascosa County gets about 7 days a year, when storm water overloads sewer mains and pushes up through the lowest drain in the house.
Roof leaks here come from summer downpours. Most show up as ceiling stains in the room below.
7% of occupied homes in Atascosa 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 173 times a year in Atascosa County. Mold after a leak spreads fastest from June through August.
Local risk profile
About 51,008 people live in Atascosa County, 1,220 square miles in southern Texas, in roughly 19,214 homes. The county seat is Jourdanton, and Pleasanton, Poteet and Lytle round out the largest towns. Much of its housing is recent, with a median build year of 1993.
33/100 Water Damage Risk Index: Moderate Atascosa County ranks 220 of 232 Texas counties. See the statewide ranking and method.The three factors where Atascosa County ranks highest compared with other Texas counties.
Atascosa County is milder than most of Texas, but not mild enough to skip winterizing. From 2015–2024 it averaged 0 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 7 nights at or below 32°F. That ranks 205th of 232 counties.
With only about 7 freezing nights a year, many homes here aren't built for cold, so a single arctic outbreak can burst pipes across the county. The record low in this data was about 15°F, on February 16, 2021.
Rainfall is about average for Texas. About 7 days a year bring an inch or more (129th of 232), most often in May, out of 25.8 inches of total precipitation. On September 10, 2020, 3.57 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 4.41 inches (through December 5, 2016).
Housing
Texas's 232 counties range widely in housing age; Atascosa ranks 172nd, with 35% of its homes built before 1980.
Since 2000 the county has added enough housing that 37% 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 28% 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.
35% of homes are manufactured or mobile homes, above the Texas county median of 13.4%. 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
About 173 nights a year in Atascosa County stay at 65°F or warmer, a sign of muggy summer air (36th of 232 counties). May is the wettest month. 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, Atascosa County homes break down as 9% utility gas, 83% electric, 6% 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 Atascosa County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Bexar, Frio, Karnes and Wilson get more pipe-freeze nights than Atascosa. Live Oak County has the oldest housing nearby, with 41% of homes built before 1980.
By the numbers
| Factor | Atascosa | Texas median | Rank |
|---|---|---|---|
| Homes built before 1960 | 12% | 20% | 175 of 232 |
| Homes built before 1980 | 35% | 46% | 172 of 232 |
| Homes built 2000 or later | 37% | 26% | 48 of 232 |
| Manufactured or mobile homes | 35% | 13% | 5 of 232 |
| Vacant homes | 13% | 17% | 158 of 232 |
| Wood or propane heat | 6.8% | 6.5% | 115 of 232 |
| Nights at 20°F or colder | 0/yr | 3/yr | 205 of 232 |
| Days with 1 inch+ of rain | 7/yr | 7.8/yr | 129 of 232 |
| Freeze-thaw days | 7/yr | 27/yr | 196 of 232 |
| Muggy nights (65°F+) | 173/yr | 129/yr | 36 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 Atascosa County: freezing from midwinter, heavy rain in April, May and September.
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