Guadalupe County, Texas · Seguin
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Guadalupe County averages 1 night a year at 20°F or colder, mostly midwinter, and 8% of its homes predate 1960.
Basements flood here mostly in April. Guadalupe County averages 8 days a year with an inch of rain or more.
Sewage backups in Guadalupe County spike on heavy-rain days, about 8 a year, when sewer mains fill up and water finds the lowest drain.
Roof leaks here come from summer downpours. Most show up as ceiling stains in the room below.
3% of occupied homes in Guadalupe County heat mainly with wood or propane, below the Texas county median of 6.5%.
Muggy summer nights, lows of 65°F or more, come about 161 times a year in Guadalupe County. Mold after a leak spreads fastest from June through August.
Local risk profile
About 183,642 people live in Guadalupe County, 711 square miles in central Texas, in roughly 69,700 homes. Besides Seguin, the county seat, the biggest communities are Schertz, Cibolo and Redwood. Much of its housing is recent, with a median build year of 2003.
35/100 Water Damage Risk Index: Moderate Guadalupe County ranks 209 of 232 Texas counties. See the statewide ranking and method.The three factors where Guadalupe County ranks highest compared with other Texas counties.
Winters here are on the gentler end for Texas, and pipes still freeze. It averaged 10 freezing nights a year over 2015–2024, 1 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 159th.
The longest cold spell was straight 3 days without the temperature rising above freezing, ending in February 2021. The coldest night reached about 11°F on February 16, 2021. Burst pipes usually show up when a spell like that breaks and the ice thaws.
Hard freezes are uncommon here, about 10 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 11°F on February 16, 2021.
Rainfall is about average for Texas. Of roughly 31.5 inches of yearly precipitation, the damage comes from the 8 days a year with an inch or more, ranked 110th of 232. April, May and August see the most. The single wettest day in the record: 5.44 inches, August 27, 2017. The worst three-day stretch dropped 9.34 inches, ending August 28, 2017, the kind of soaking that overwhelms sump pumps and storm sewers.
Housing
19% of homes in Guadalupe County predate 1980, below the Texas county median of 45.8%, which ranks 220th of Texas's 232 counties.
Growth since 2000 added 56% of today's homes. In houses that new, the weak points are washing machine hoses, ice maker lines, water heaters and sump pumps rather than the pipes in the walls.
25% 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.
13% of homes are manufactured or mobile homes, close to 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
Guadalupe County averages 161 warm, muggy nights a year (lows of 65°F or more) and gets the most rain in May. The EPA recommends keeping indoor humidity below 60%, ideally 30 to 50%. Basements can pass 60% on their own in summer, so a dehumidifier matters even without a leak, and anything wet should be dried within 24 to 48 hours.
Mold remediation: what to expectMain heating fuel in Guadalupe County's occupied homes: 11% utility gas, 85% 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 Guadalupe County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Guadalupe gets more pipe-freeze nights than any of its neighbors. Gonzales County has the oldest housing nearby, with 46% of homes built before 1980.
By the numbers
| Factor | Guadalupe | Texas median | Rank |
|---|---|---|---|
| Homes built before 1960 | 7.5% | 20% | 205 of 232 |
| Homes built before 1980 | 19% | 46% | 220 of 232 |
| Homes built 2000 or later | 56% | 26% | 11 of 232 |
| Manufactured or mobile homes | 13% | 13% | 127 of 232 |
| Vacant homes | 6.1% | 17% | 220 of 232 |
| Wood or propane heat | 2.9% | 6.5% | 191 of 232 |
| Nights at 20°F or colder | 1/yr | 3/yr | 159 of 232 |
| Days with 1 inch+ of rain | 8/yr | 7.8/yr | 110 of 232 |
| Freeze-thaw days | 10/yr | 27/yr | 182 of 232 |
| Muggy nights (65°F+) | 161/yr | 129/yr | 49 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 Guadalupe County: freezing from midwinter, heavy rain in April, May and August.
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