Oceana County, Michigan · Hart
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With 30% of homes built before 1960 and about 49 hard-freeze nights a year, frozen and split pipes are a leading winter risk in the county.
Basements flood here mostly in June. Oceana County averages 4.6 days a year with an inch of rain or more.
Sewage backups in Oceana County spike on heavy-rain days, about 4.6 a year, when sewer mains fill up and water finds the lowest drain.
Oceana County's wettest day in the 2015–2024 record brought 3.34 inches, and about 98 freeze-thaw days a year mean ice dams in some winters.
48% of occupied homes in Oceana County heat mainly with wood or propane, above the Michigan county median of 29%.
With 8 muggy nights a year, mold in Oceana County can appear within days of a leak. Dry first, then clean.
Local risk profile
Oceana County covers 538 square miles of central Lower Michigan, with about 26,915 residents and 15,723 homes. Besides Hart, the county seat, the biggest communities are Shelby, Hesperia and Pentwater. The county's median home was built in 1978.
51/100 Water Damage Risk Index: Elevated Oceana County ranks 40 of 83 Michigan counties. See the statewide ranking and method.The three factors where Oceana County ranks highest compared with other Michigan counties.
For frozen pipes, Oceana County is a typical Michigan county, which is still plenty. In the 2015–2024 record the county logged about 49 nights a year at or below 20°F (47th of 83) and 140 below freezing. Twenty degrees is roughly where uninsulated pipes start to freeze.
Cold snaps are the real risk. The worst in the record lasted 27 days below freezing (ending March 2015), and the low bottomed out near -13°F on February 20, 2015.
The freeze season here runs November to April, 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 19 and the last spring freeze around May 7.
Heavy rain is a bigger factor here than in most of Michigan. About 4.6 days a year bring an inch or more (24th of 83), most often in June, out of 37.4 inches of total precipitation. On October 2, 2019, 3.34 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 5.67 inches (through August 29, 2018).
The temperature crosses 32°F in both directions on roughly 98 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
Michigan's 83 counties range widely in housing age; Oceana ranks 61st, with 53% of its homes built before 1980.
Growth since 2000 added 21% of today's homes. In houses that new, the weak points are washing machine hoses, ice maker lines, water heaters and sump pumps rather than the pipes in the walls.
About 26% 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.
Manufactured and mobile homes make up 16% of the housing here. Water lines in the underbelly depend on intact skirting and working heat tape, and they're usually the first to freeze in a cold snap.
34% of homes were vacant at survey time. A leak in an empty rental or seasonal house can run for days before anyone notices, which is why those losses tend to be larger.
Beyond water
Oceana County averages 8 warm, muggy nights a year (lows of 65°F or more) and gets the most rain in October. 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 Oceana County's occupied homes: 31% utility gas, 11% electric, 36% propane and 12% wood. Wood and propane heat are more common here than in most Michigan 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 Oceana County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Mason and Newaygo get more pipe-freeze nights than Oceana. Muskegon County has the oldest housing nearby, with 64% of homes built before 1980.
By the numbers
| Factor | Oceana | Michigan median | Rank |
|---|---|---|---|
| Homes built before 1960 | 30% | 32% | 46 of 83 |
| Homes built before 1980 | 53% | 58% | 61 of 83 |
| Homes built 2000 or later | 21% | 16% | 14 of 83 |
| Manufactured or mobile homes | 16% | 7.3% | 5 of 83 |
| Vacant homes | 34% | 20% | 22 of 83 |
| Wood or propane heat | 48% | 29% | 12 of 83 |
| Nights at 20°F or colder | 49/yr | 54/yr | 47 of 83 |
| Days with 1 inch+ of rain | 4.6/yr | 3.9/yr | 24 of 83 |
| Freeze-thaw days | 98/yr | 95/yr | 30 of 83 |
| Muggy nights (65°F+) | 8/yr | 10/yr | 44 of 83 |
Rank 1 is the highest value. Bars run from the lowest to the highest Michigan county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Oceana County: freezing from November to April, heavy rain in June, August 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