Lapeer County, Michigan · Lapeer
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Lapeer County averages 45 nights a year at 20°F or colder, mostly November to March, and 26% of its homes predate 1960.
Heavy rain days of an inch or more come about 3.3 times a year here, most often in August. A sump pump that hasn't run since last season is a common weak point.
Backups often follow heavy rain, which Lapeer County gets about 3.3 days a year, when storm water overloads sewer mains and pushes up through the lowest drain in the house.
Roof leaks here come from summer downpours and, with about 86 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
25% of occupied homes in Lapeer County heat mainly with wood or propane, below the Michigan county median of 29%.
With 21 muggy nights a year, mold in Lapeer County can appear within days of a leak. Dry first, then clean.
Local risk profile
Lapeer County covers 647 square miles of southeast Michigan, with about 88,837 residents and 37,147 homes. Lapeer is the county seat; Imlay City, Almont and Dryden are the next largest communities. The county's median home was built in 1978.
37/100 Water Damage Risk Index: Moderate Lapeer County ranks 70 of 83 Michigan counties. See the statewide ranking and method.The three factors where Lapeer County ranks highest compared with other Michigan counties.
For frozen pipes, Lapeer County is a typical Michigan county, which is still plenty. From 2015–2024 it averaged 45 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 129 nights at or below 32°F. That ranks 55th of 83 counties.
Cold snaps are the real risk. The worst in the record lasted 22 days below freezing (ending March 2015), and the low bottomed out near -21°F on February 20, 2015.
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 24 and the last spring freeze around May 2.
Lapeer gets fewer downpours than most Michigan counties, but they still fill basements. About 3.3 days a year bring an inch or more (63rd of 83), most often in August, out of 33.7 inches of total precipitation. On June 26, 2021, 2.2 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 3.46 inches (through July 11, 2024).
Freeze-thaw days, below freezing overnight and above it by afternoon, come about 86 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
Michigan's 83 counties range widely in housing age; Lapeer ranks 60th, with 54% of its homes built before 1980.
Older and newer homes sit side by side here: 26% predate 1960 and 17% are from 2000 or later. Corroded pipe is the typical failure in the first group, burst supply hoses in the second.
The 1980s and 1990s account for 30% 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.
7% of homes are manufactured or mobile homes, close to the Michigan county median of 7.3%. 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
Summer nights that don't drop below 65°F, a good marker of humid air, come about 21 times a year here, above the Michigan county median of 10. 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 expectHeating fuel matters for fire risk. In Lapeer County it's 62% utility gas, 9% electric, 21% propane and 4% 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 Lapeer County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Lapeer gets more pipe-freeze nights than any of its neighbors. Genesee County has the oldest housing nearby, with 68% of homes built before 1980.
By the numbers
| Factor | Lapeer | Michigan median | Rank |
|---|---|---|---|
| Homes built before 1960 | 26% | 32% | 57 of 83 |
| Homes built before 1980 | 54% | 58% | 60 of 83 |
| Homes built 2000 or later | 17% | 16% | 38 of 83 |
| Manufactured or mobile homes | 7.3% | 7.3% | 41 of 83 |
| Vacant homes | 6.2% | 20% | 72 of 83 |
| Wood or propane heat | 25% | 29% | 50 of 83 |
| Nights at 20°F or colder | 45/yr | 54/yr | 55 of 83 |
| Days with 1 inch+ of rain | 3.3/yr | 3.9/yr | 63 of 83 |
| Freeze-thaw days | 86/yr | 95/yr | 73 of 83 |
| Muggy nights (65°F+) | 21/yr | 10/yr | 17 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 Lapeer County: freezing from November to March, heavy rain in May, June 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