Okmulgee County, Oklahoma · Okmulgee
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Pipes freeze in Okmulgee County on about 12 nights a year, mostly December to February. Older homes, 32% of the stock here, are most at risk.
Basements flood here mostly in May. Okmulgee County averages 11.7 days a year with an inch of rain or more.
Sewage backups in Okmulgee County spike on heavy-rain days, about 11.7 a year, when sewer mains fill up and water finds the lowest drain.
Okmulgee County's wettest day in the 2015–2024 record brought 3.89 inches, and about 57 freeze-thaw days a year mean ice dams in some winters.
13% of occupied homes in Okmulgee County heat mainly with wood or propane, close to the Oklahoma county median of 12.5%.
About 104 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 36,899 people live in Okmulgee County, 697 square miles in eastern Oklahoma, in roughly 16,738 homes. The county seat is Okmulgee, and Henryetta, Morris and Beggs round out the largest towns. The county's median home was built in 1976.
58/100 Water Damage Risk Index: Elevated Okmulgee County ranks 14 of 77 Oklahoma counties. See the statewide ranking and method.The three factors where Okmulgee County ranks highest compared with other Oklahoma counties.
For frozen pipes, Okmulgee County is a typical Oklahoma county, which is still plenty. From 2015–2024 it averaged 12 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 62 nights at or below 32°F. That ranks 41st of 77 counties.
Cold snaps are the real risk. The worst in the record lasted 10 days below freezing (ending February 2021), and the low bottomed out near -13°F on February 17, 2021.
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 2 and the last spring freeze around Mar 23.
Rainfall is about average for Oklahoma. Of roughly 45.1 inches of yearly precipitation, the damage comes from the 11.7 days a year with an inch or more, ranked 31st of 77. April, May and October see the most. The single wettest day in the record: 3.89 inches, December 27, 2015. Multi-day storms matter most for basements; the wettest three days on record here totaled 7.84 inches (through November 5, 2024).
About 57 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
Oklahoma's 77 counties range widely in housing age; Okmulgee ranks 34th, with 56% of its homes built before 1980.
Before 1960 is when 32% of these homes went up. Galvanized supply lines and cast iron drains were standard then, and after 60-plus years both corrode and crack, often out of sight inside a wall or under a slab.
The 1980s and 1990s account for 24% 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.
15% of homes are manufactured or mobile homes, above the Oklahoma county median of 12.3%. 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
Okmulgee County averages 104 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 expectBy main heating fuel, Okmulgee County homes break down as 46% utility gas, 40% electric, 11% 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 Okmulgee County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Creek and Tulsa get more pipe-freeze nights than Okmulgee. Its housing is the oldest in the area by share of homes built before 1980.
By the numbers
| Factor | Okmulgee | Oklahoma median | Rank |
|---|---|---|---|
| Homes built before 1960 | 32% | 24% | 25 of 77 |
| Homes built before 1980 | 56% | 55% | 34 of 77 |
| Homes built 2000 or later | 20% | 22% | 45 of 77 |
| Manufactured or mobile homes | 15% | 12% | 28 of 77 |
| Vacant homes | 15% | 17% | 50 of 77 |
| Wood or propane heat | 13% | 13% | 37 of 77 |
| Nights at 20°F or colder | 12/yr | 13/yr | 41 of 77 |
| Days with 1 inch+ of rain | 12/yr | 11/yr | 31 of 77 |
| Freeze-thaw days | 57/yr | 65/yr | 53 of 77 |
| Muggy nights (65°F+) | 104/yr | 98/yr | 22 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 Okmulgee County: freezing from December to February, heavy rain in April, May 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