Thayer County, Nebraska · Hebron
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Thayer County averages 51 nights a year at 20°F or colder, mostly November to March, and 56% of its homes predate 1960.
Heavy rain days of an inch or more come about 6 times a year here, most often in May. A sump pump that hasn't run since last season is a common weak point.
56% 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.
In Thayer County, 3.22 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
17% of occupied homes in Thayer County heat mainly with wood or propane, below the Nebraska county median of 19.4%.
With 43 muggy nights a year, mold in Thayer County can appear within days of a leak. Dry first, then clean.
Local risk profile
About 4,901 people live in Thayer County, 574 square miles in southeast Nebraska, in roughly 2,497 homes. Hebron is the county seat; Deshler, Bruning and Davenport are the next largest communities. It has some of the oldest housing in the state: the median home went up in 1956.
59/100 Water Damage Risk Index: Elevated Thayer County ranks 20 of 93 Nebraska counties. See the statewide ranking and method.The three factors where Thayer County ranks highest compared with other Nebraska counties.
Thayer County is milder than most of Nebraska, but not mild enough to skip winterizing. It averaged 132 freezing nights a year over 2015–2024, 51 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 93 Nebraska counties that's 81st.
On February 16, 2021 the low fell to about -25°F, and in the stretch ending February 2021 the county went 13 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
The freeze season here runs November to March, with January the coldest. If you travel then, leave the thermostat at 55°F or above and open sink cabinets on outside walls.
On average the first fall freeze arrives around Oct 23 and the last spring freeze around Apr 20.
Heavy rain is a bigger factor here than in most of Nebraska. The county gets about 27.9 inches of rain and melted snow a year, with 6 days of an inch or more (17th of 93). Those downpours cluster in May, June and July, when sump pumps and gutters are tested hardest. The wettest day on record brought 3.22 inches on May 7, 2015. Multi-day storms matter most for basements; the wettest three days on record here totaled 4.26 inches (through June 6, 2015).
About 105 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
Roughly 80% of the county's housing was built before 1980. That puts Thayer among the oldest housing stocks of Nebraska's 93 counties.
Before 1960 is when 56% of these homes went up. Galvanized supply lines and cast iron drains were standard then, and after 60-plus years both corrode and crack, often out of sight inside a wall or under a slab.
The Census counted 16% of homes as vacant, above the Nebraska county median of 14.2%. Empty houses are where a small leak turns into a large claim, because nobody is there to hear it.
Beyond water
Summer nights that don't drop below 65°F, a good marker of humid air, come about 43 times a year here, above the Nebraska county median of 27. Mold grows when indoor humidity stays above about 60%, the EPA's ceiling. A basement dehumidifier set to 50% and drying anything wet within 24 to 48 hours prevents most problems.
Mold remediation: what to expectHeating fuel matters for fire risk. In Thayer County it's 47% utility gas, 34% electric, 15% propane and 2% wood. Heating equipment, cooking and electrical failures cause most home fires nationally. Even a small kitchen fire can leave soot through the whole house, because smoke follows air currents into closets, ducts and attic space.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Thayer County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Fillmore gets more pipe-freeze nights than Thayer. It also has the most heavy-rain days in its area. Nuckolls County has the oldest housing nearby, with 80% of homes built before 1980.
By the numbers
| Factor | Thayer | Nebraska median | Rank |
|---|---|---|---|
| Homes built before 1960 | 56% | 49% | 24 of 93 |
| Homes built before 1980 | 80% | 73% | 20 of 93 |
| Homes built 2000 or later | 7.2% | 12% | 80 of 93 |
| Manufactured or mobile homes | 1% | 5% | 90 of 93 |
| Vacant homes | 16% | 14% | 35 of 93 |
| Wood or propane heat | 17% | 19% | 60 of 93 |
| Nights at 20°F or colder | 51/yr | 64/yr | 81 of 93 |
| Days with 1 inch+ of rain | 6/yr | 5.1/yr | 17 of 93 |
| Freeze-thaw days | 105/yr | 112/yr | 57 of 93 |
| Muggy nights (65°F+) | 43/yr | 27/yr | 14 of 93 |
Rank 1 is the highest value. Bars run from the lowest to the highest Nebraska county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Thayer County: freezing from November to March, heavy rain in May, June and July.
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