Merrick County, Nebraska · Central City
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Merrick County averages 59 nights a year at 20°F or colder, mostly November to March, and 43% of its homes predate 1960.
Heavy rain days of an inch or more come about 5.4 times a year here, most often in May. A sump pump that hasn't run since last season is a common weak point.
43% 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 Merrick County, 3.68 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
19% of occupied homes in Merrick County heat mainly with wood or propane, close to the Nebraska county median of 19.4%.
About 37 nights a year here stay at 65°F or warmer, so basements and crawl spaces can grow mold even without a leak.
Local risk profile
Merrick County covers 488 square miles of eastern Nebraska, with about 7,724 residents and 3,598 homes. Besides Central City, the county seat, the biggest communities are Palmer, Silver Creek and Clarks. The county's median home was built in 1970.
47/100 Water Damage Risk Index: Elevated Merrick County ranks 60 of 93 Nebraska counties. See the statewide ranking and method.The three factors where Merrick County ranks highest compared with other Nebraska counties.
For frozen pipes, Merrick County is a typical Nebraska county, which is still plenty. It averaged 141 freezing nights a year over 2015–2024, 59 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 62nd.
On February 16, 2021 the low fell to about -29°F, and in the stretch ending February 2021 the county went 16 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
Most freezing nights fall from November to March, peaking in January. Disconnect garden hoses and shut off outdoor spigots before the first hard frost, and keep the heat at 55°F or higher if you'll be away.
On average the first fall freeze arrives around Oct 18 and the last spring freeze around Apr 22.
Rainfall is about average for Nebraska. Of roughly 27.6 inches of yearly precipitation, the damage comes from the 5.4 days a year with an inch or more, ranked 32nd of 93. May, June and July see the most. The single wettest day in the record: 3.68 inches, August 16, 2017. Multi-day storms matter most for basements; the wettest three days on record here totaled 5.1 inches (through March 16, 2021).
The temperature crosses 32°F in both directions on roughly 107 days a year. Each cycle melts and refreezes water at roof edges and in foundation cracks, which is how ice dams and basement seepage get started.
Housing
66% of homes in Merrick County predate 1980, below the Nebraska county median of 73.1%, which ranks 71st of Nebraska's 93 counties.
Since 2000 the county has added enough housing that 19% of homes are that new. Modern PEX and copper rarely fail on their own; the leaks come from connections, appliances and storms.
Beyond water
Summer nights that don't drop below 65°F, a good marker of humid air, come about 37 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 expectBy main heating fuel, Merrick County homes break down as 33% utility gas, 46% electric, 17% propane and 2% 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 Merrick County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Howard, Nance, Platte and Polk get more pipe-freeze nights than Merrick. Nance County has the oldest housing nearby, with 81% of homes built before 1980.
By the numbers
| Factor | Merrick | Nebraska median | Rank |
|---|---|---|---|
| Homes built before 1960 | 43% | 49% | 63 of 93 |
| Homes built before 1980 | 66% | 73% | 71 of 93 |
| Homes built 2000 or later | 19% | 12% | 15 of 93 |
| Manufactured or mobile homes | 3.6% | 5% | 67 of 93 |
| Vacant homes | 11% | 14% | 65 of 93 |
| Wood or propane heat | 19% | 19% | 47 of 93 |
| Nights at 20°F or colder | 59/yr | 64/yr | 62 of 93 |
| Days with 1 inch+ of rain | 5.4/yr | 5.1/yr | 32 of 93 |
| Freeze-thaw days | 107/yr | 112/yr | 53 of 93 |
| Muggy nights (65°F+) | 37/yr | 27/yr | 21 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 Merrick 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