Cole County, Missouri · Jefferson City
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Cole County averages 24 nights a year at 20°F or colder, mostly December to February, and 20% of its homes predate 1960.
August brings the most downpours to Cole County, part of 9.4 heavy-rain days a year. Check the sump first.
20% 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 Cole County, 4.31 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
11% of occupied homes in Cole County heat mainly with wood or propane, below the Missouri county median of 24.5%.
Muggy summer nights, lows of 65°F or more, come about 75 times a year in Cole County. Mold after a leak spreads fastest from June through August.
Local risk profile
About 77,032 people live in Cole County, 392 square miles in central Missouri, in roughly 33,533 homes. Jefferson City is the county seat; Wardsville, Taos and St. Martins are the next largest communities. The county's median home was built in 1982.
41/100 Water Damage Risk Index: Moderate Cole County ranks 89 of 114 Missouri counties. See the statewide ranking and method.The three factors where Cole County ranks highest compared with other Missouri counties.
For frozen pipes, Cole County is a typical Missouri county, which is still plenty. It averaged 84 freezing nights a year over 2015–2024, 24 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 70th.
The longest cold spell was straight 13 days without the temperature rising above freezing, ending in February 2021. The coldest night reached about -10°F on January 14, 2024. Burst pipes usually show up when a spell like that breaks and the ice thaws.
The freeze season here runs December to February, 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 Nov 1 and the last spring freeze around Apr 5.
Rainfall is about average for Missouri. Of roughly 41.6 inches of yearly precipitation, the damage comes from the 9.4 days a year with an inch or more, ranked 71st of 114. July, August and October see the most. The single wettest day in the record: 4.31 inches, April 30, 2017. Multi-day storms matter most for basements; the wettest three days on record here totaled 5.8 inches (through December 29, 2015).
Freeze-thaw days, below freezing overnight and above it by afternoon, come about 68 times a year here. They're the main driver of ice dams and of water working its way through foundation cracks in late winter.
Housing
Missouri's 114 counties range widely in housing age; Cole ranks 80th, with 47% of its homes built before 1980.
Housing age is mixed: 20% of homes are pre-1960 and 23% are 2000 or newer. Ask any plumber which era your house is from and you'll know which failures to watch for.
About 30% of homes went up between 1980 and 1999. Some houses from the late 1970s to the mid-1990s were plumbed with polybutylene, a gray plastic pipe known for failing at fittings. A plumber can tell you in a few minutes whether you have it.
Renters occupy 32% 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
Cole County averages 75 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 Cole County's occupied homes: 32% utility gas, 56% electric, 9% 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 Cole County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Boone, Callaway, Moniteau and Osage get more pipe-freeze nights than Cole. Moniteau County has the oldest housing nearby, with 52% of homes built before 1980.
By the numbers
| Factor | Cole | Missouri median | Rank |
|---|---|---|---|
| Homes built before 1960 | 20% | 25% | 83 of 114 |
| Homes built before 1980 | 47% | 53% | 80 of 114 |
| Homes built 2000 or later | 23% | 21% | 50 of 114 |
| Manufactured or mobile homes | 2.3% | 9.8% | 109 of 114 |
| Vacant homes | 7.3% | 15% | 101 of 114 |
| Wood or propane heat | 11% | 25% | 98 of 114 |
| Nights at 20°F or colder | 24/yr | 28/yr | 70 of 114 |
| Days with 1 inch+ of rain | 9.4/yr | 10/yr | 71 of 114 |
| Freeze-thaw days | 68/yr | 77/yr | 103 of 114 |
| Muggy nights (65°F+) | 75/yr | 65/yr | 14 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 Cole County: freezing from December to February, heavy rain in July, August and October.
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