Sequoyah County, Oklahoma · Sallisaw
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Pipes freeze in Sequoyah County on about 10 nights a year, mostly December to February. Older homes, 9% of the stock here, are most at risk.
May brings the most downpours to Sequoyah County, part of 16.2 heavy-rain days a year. Check the sump first.
Sewage backups in Sequoyah County spike on heavy-rain days, about 16.2 a year, when sewer mains fill up and water finds the lowest drain.
Sequoyah County's wettest day in the 2015–2024 record brought 4.77 inches, and about 57 freeze-thaw days a year mean ice dams in some winters.
13% of occupied homes in Sequoyah County heat mainly with wood or propane, close to the Oklahoma county median of 12.5%.
With 103 muggy nights a year, mold in Sequoyah County can appear within days of a leak. Dry first, then clean.
Local risk profile
About 39,860 people live in Sequoyah County, 674 square miles in eastern Oklahoma, in roughly 18,367 homes. The county seat is Sallisaw, and Roland, Muldrow and Vian round out the largest towns. Much of its housing is recent, with a median build year of 1986.
44/100 Water Damage Risk Index: Moderate Sequoyah County ranks 61 of 77 Oklahoma counties. See the statewide ranking and method.The three factors where Sequoyah County ranks highest compared with other Oklahoma counties.
Sequoyah County is milder than most of Oklahoma, but not mild enough to skip winterizing. It averaged 61 freezing nights a year over 2015–2024, 10 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 77 Oklahoma counties that's 52nd.
On February 17, 2021 the low fell to about -8°F, and in the stretch ending February 2021 the county went 10 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
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 Nov 11 and the last spring freeze around Mar 24.
Heavy rain is a bigger factor here than in most of Oklahoma. About 16.2 days a year bring an inch or more (4th of 77), most often in May, out of 54.8 inches of total precipitation. On December 28, 2015, 4.77 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 8.27 inches (through December 29, 2015).
The temperature crosses 32°F in both directions on roughly 57 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
38% of homes in Sequoyah County predate 1980, below the Oklahoma county median of 54.8%, which ranks 68th of Oklahoma's 77 counties.
Older and newer homes sit side by side here: 9% predate 1960 and 25% are from 2000 or later. Corroded pipe is the typical failure in the first group, burst supply hoses in the second.
37% date from 1980 to 1999, the window when polybutylene, a gray flexible plastic supply pipe, was used in some homes. It's prone to leaks at the fittings, so it's worth checking for in a house from those years.
Here 19% of housing is manufactured homes. Check the skirting and the heat tape on the main water line every fall, because that one exposed line is what freezes.
Beyond water
Sequoyah County averages 103 warm, muggy nights a year (lows of 65°F or more) and gets the most rain in May. 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 expectMain heating fuel in Sequoyah County's occupied homes: 21% utility gas, 64% electric, 9% propane and 4% wood. Wood heat is more common here than in most Oklahoma counties. Heating equipment is one of the leading causes of home fires nationally, and the NFPA recommends having chimneys and vents inspected every year.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Sequoyah County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Adair and Cherokee get more pipe-freeze nights than Sequoyah. Muskogee County has the oldest housing nearby, with 55% of homes built before 1980.
By the numbers
| Factor | Sequoyah | Oklahoma median | Rank |
|---|---|---|---|
| Homes built before 1960 | 9.3% | 24% | 73 of 77 |
| Homes built before 1980 | 38% | 55% | 68 of 77 |
| Homes built 2000 or later | 25% | 22% | 28 of 77 |
| Manufactured or mobile homes | 19% | 12% | 12 of 77 |
| Vacant homes | 16% | 17% | 46 of 77 |
| Wood or propane heat | 13% | 13% | 40 of 77 |
| Nights at 20°F or colder | 10/yr | 13/yr | 52 of 77 |
| Days with 1 inch+ of rain | 16/yr | 11/yr | 4 of 77 |
| Freeze-thaw days | 57/yr | 65/yr | 53 of 77 |
| Muggy nights (65°F+) | 103/yr | 98/yr | 26 of 77 |
Rank 1 is the highest value. Bars run from the lowest to the highest Oklahoma county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Sequoyah County: freezing from December to February, heavy rain in April, May 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