Nodaway County, Missouri · Maryville
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Nodaway County averages 47 nights a year at 20°F or colder, mostly November to March, and 31% of its homes predate 1960.
Heavy rain days of an inch or more come about 8.6 times a year here, most often in July. A sump pump that hasn't run since last season is a common weak point.
31% 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 Nodaway County, 2.93 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
16% of occupied homes in Nodaway County heat mainly with wood or propane, below the Missouri county median of 24.5%.
About 49 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
About 20,774 people live in Nodaway County, 877 square miles in northwest Missouri, in roughly 9,536 homes. Maryville is the county seat; Ravenwood, Burlington Junction and Hopkins are the next largest communities. The county's median home was built in 1977.
55/100 Water Damage Risk Index: Elevated Nodaway County ranks 38 of 114 Missouri counties. See the statewide ranking and method.The three factors where Nodaway County ranks highest compared with other Missouri counties.
Nodaway is on the colder side of Missouri for pipes. It averaged 120 freezing nights a year over 2015–2024, 47 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 114 Missouri counties that's 4th.
The longest cold spell was straight 16 days without the temperature rising above freezing, ending in January 2018. The coldest night reached about -20°F on February 16, 2021. Burst pipes usually show up when a spell like that breaks and the ice thaws.
Expect the hardest freezes in January, inside a season that runs November to March. That's when an outdoor spigot left connected to a hose, or a pipe in a crawl space, is most likely to split.
On average the first fall freeze arrives around Oct 23 and the last spring freeze around Apr 13.
Nodaway gets fewer downpours than most Missouri counties, but they still fill basements. Of roughly 35.9 inches of yearly precipitation, the damage comes from the 8.6 days a year with an inch or more, ranked 91st of 114. May, July and August see the most. The single wettest day in the record: 2.93 inches, June 25, 2021. Multi-day storms matter most for basements; the wettest three days on record here totaled 4 inches (through June 26, 2021).
About 90 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 56% of the county's housing was built before 1980. That puts Nodaway near the middle of Missouri's 114 counties.
31% were built before 1960. Homes from that era often still have galvanized steel supply pipe, which rusts from the inside until it pinholes, and cast iron drains that crack with age. Slow leaks behind walls are a common start to water damage in these houses.
Renters occupy 38% of homes. If you rent, the building is usually the landlord's to repair, but your belongings are only covered by renters insurance.
Beyond water
Nodaway County averages 49 warm, muggy nights a year (lows of 65°F or more) and gets the most rain in May. 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 expectMain heating fuel in Nodaway County's occupied homes: 27% utility gas, 53% electric, 12% propane and 4% 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 Nodaway County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Worth gets more pipe-freeze nights than Nodaway. Atchison County has the oldest housing nearby, with 82% of homes built before 1980.
By the numbers
| Factor | Nodaway | Missouri median | Rank |
|---|---|---|---|
| Homes built before 1960 | 31% | 25% | 42 of 114 |
| Homes built before 1980 | 56% | 53% | 47 of 114 |
| Homes built 2000 or later | 22% | 21% | 51 of 114 |
| Manufactured or mobile homes | 4.5% | 9.8% | 101 of 114 |
| Vacant homes | 11% | 15% | 86 of 114 |
| Wood or propane heat | 16% | 25% | 85 of 114 |
| Nights at 20°F or colder | 47/yr | 28/yr | 4 of 114 |
| Days with 1 inch+ of rain | 8.6/yr | 10/yr | 91 of 114 |
| Freeze-thaw days | 90/yr | 77/yr | 4 of 114 |
| Muggy nights (65°F+) | 49/yr | 65/yr | 98 of 114 |
Rank 1 is the highest value. Bars run from the lowest to the highest Missouri county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Nodaway County: freezing from November to March, heavy rain in May, July 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