Douglas County, Missouri · Ava
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Douglas County averages 21 nights a year at 20°F or colder, mostly December to February, and 17% of its homes predate 1960.
April brings the most downpours to Douglas County, part of 12.2 heavy-rain days a year. Check the sump first.
17% 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 Douglas County, 5.34 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
58% of occupied homes in Douglas County heat mainly with wood or propane, above the Missouri county median of 24.5%.
Muggy summer nights, lows of 65°F or more, come about 58 times a year in Douglas County. Mold after a leak spreads fastest from June through August.
Local risk profile
Douglas County covers 814 square miles of southern Missouri, with about 11,965 residents and 5,391 homes. Ava is the county seat. Much of its housing is recent, with a median build year of 1987.
35/100 Water Damage Risk Index: Moderate Douglas County ranks 108 of 114 Missouri counties. See the statewide ranking and method.The three factors where Douglas County ranks highest compared with other Missouri counties.
Douglas County is milder than most of Missouri, but not mild enough to skip winterizing. It averaged 86 freezing nights a year over 2015–2024, 21 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 91st.
The longest cold spell was straight 12 days without the temperature rising above freezing, ending in February 2021. The coldest night reached about -9°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 December to February. 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 25 and the last spring freeze around Apr 9.
Heavy rain is a bigger factor here than in most of Missouri. About 12.2 days a year bring an inch or more (26th of 114), most often in April, out of 51.4 inches of total precipitation. On November 5, 2024, 5.34 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 9.42 inches (through November 5, 2024).
About 76 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
40% of homes in Douglas County predate 1980, below the Missouri county median of 53%, which ranks 99th of Missouri's 114 counties.
Since 2000 the county has added enough housing that 29% 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 32% 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.
14% of homes are manufactured or mobile homes, above the Missouri county median of 9.8%. 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
Douglas County averages 58 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 Douglas County's occupied homes: 15% utility gas, 26% electric, 38% propane and 20% wood. Wood and propane heat are more common here than the state median. Have chimneys swept and fuel-burning appliances serviced each fall, and keep three feet clear around stoves and space heaters.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Douglas County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Christian, Texas, Webster and Wright get more pipe-freeze nights than Douglas. Wright County has the oldest housing nearby, with 53% of homes built before 1980.
By the numbers
| Factor | Douglas | Missouri median | Rank |
|---|---|---|---|
| Homes built before 1960 | 17% | 25% | 95 of 114 |
| Homes built before 1980 | 40% | 53% | 99 of 114 |
| Homes built 2000 or later | 29% | 21% | 18 of 114 |
| Manufactured or mobile homes | 14% | 9.8% | 21 of 114 |
| Vacant homes | 14% | 15% | 70 of 114 |
| Wood or propane heat | 58% | 25% | 3 of 114 |
| Nights at 20°F or colder | 21/yr | 28/yr | 91 of 114 |
| Days with 1 inch+ of rain | 12/yr | 10/yr | 26 of 114 |
| Freeze-thaw days | 76/yr | 77/yr | 61 of 114 |
| Muggy nights (65°F+) | 58/yr | 65/yr | 78 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 Douglas County: freezing from December to February, heavy rain in March, April and May.
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