Trumbull County, Ohio · Warren
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Trumbull County averages 37 nights a year at 20°F or colder, mostly November to March, and 44% of its homes predate 1960.
Heavy rain days of an inch or more come about 5.8 times a year here, most often in June. A sump pump that hasn't run since last season is a common weak point.
44% 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 Trumbull County, 2.53 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
4% of occupied homes in Trumbull County heat mainly with wood or propane, below the Ohio county median of 15.9%.
About 18 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
Trumbull County covers 618 square miles of northeast Ohio, with about 200,929 residents and 94,464 homes. Besides Warren, the county seat, the biggest communities are Niles, Girard and Hubbard. The county's median home was built in 1964.
66/100 Water Damage Risk Index: Elevated Trumbull County ranks 7 of 88 Ohio counties. See the statewide ranking and method.The three factors where Trumbull County ranks highest compared with other Ohio counties.
Trumbull is on the colder side of Ohio for pipes. It averaged 123 freezing nights a year over 2015–2024, 37 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 88 Ohio counties that's 3rd.
On February 20, 2015 the low fell to about -21°F, and in the stretch ending March 2015 the county went 17 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
The freeze season here runs November to March, 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 Oct 26 and the last spring freeze around May 5.
Rainfall is about average for Ohio. About 5.8 days a year bring an inch or more (42nd of 88), most often in June, out of 43.3 inches of total precipitation. On September 10, 2018, 2.53 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 3.59 inches (through June 16, 2015).
About 96 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
77% of homes in Trumbull County predate 1980, above the Ohio county median of 61.1%, which ranks 4th of Ohio's 88 counties.
Before 1960 is when 44% 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.
Beyond water
About 18 nights a year in Trumbull County stay at 65°F or warmer, a sign of muggy summer air (87th of 88 counties). June is the wettest month. The EPA recommends keeping indoor humidity below 60%, ideally 30 to 50%. Basements can pass 60% on their own in summer, so a dehumidifier matters even without a leak, and anything wet should be dried within 24 to 48 hours.
Mold remediation: what to expectBy main heating fuel, Trumbull County homes break down as 80% utility gas, 13% electric, 2% 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 Trumbull County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Trumbull gets more pipe-freeze nights than any of its neighbors. It also has the most heavy-rain days in its area. Its housing is the oldest in the area by share of homes built before 1980.
By the numbers
| Factor | Trumbull | Ohio median | Rank |
|---|---|---|---|
| Homes built before 1960 | 44% | 37% | 19 of 88 |
| Homes built before 1980 | 77% | 61% | 4 of 88 |
| Homes built 2000 or later | 7.8% | 17% | 87 of 88 |
| Manufactured or mobile homes | 4.1% | 5.9% | 58 of 88 |
| Vacant homes | 8.4% | 8.4% | 43 of 88 |
| Wood or propane heat | 4.1% | 16% | 77 of 88 |
| Nights at 20°F or colder | 37/yr | 31/yr | 3 of 88 |
| Days with 1 inch+ of rain | 5.8/yr | 5.7/yr | 42 of 88 |
| Freeze-thaw days | 96/yr | 82/yr | 1 of 88 |
| Muggy nights (65°F+) | 18/yr | 35/yr | 87 of 88 |
Rank 1 is the highest value. Bars run from the lowest to the highest Ohio county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Trumbull County: freezing from November to March, heavy rain in April, June and September.
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