Tuscola County, Michigan · Caro
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Tuscola County averages 45 nights a year at 20°F or colder, mostly November to March, and 39% of its homes predate 1960.
Basements flood here mostly in August. Tuscola County averages 3.4 days a year with an inch of rain or more.
Backups often follow heavy rain, which Tuscola County gets about 3.4 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 88 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
41% of occupied homes in Tuscola County heat mainly with wood or propane, above the Michigan county median of 29%.
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
Tuscola County covers 805 square miles of southeast Michigan, with about 52,980 residents and 24,011 homes. Caro is the county seat; Vassar, Cass City and Reese are the next largest communities. The county's median home was built in 1971.
48/100 Water Damage Risk Index: Elevated Tuscola County ranks 46 of 83 Michigan counties. See the statewide ranking and method.The three factors where Tuscola County ranks highest compared with other Michigan counties.
For frozen pipes, Tuscola 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 131 nights at or below 32°F. That ranks 55th of 83 counties.
On February 20, 2015 the low fell to about -22°F, and in the stretch ending March 2015 the county went 27 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
Most freezing nights fall from November to March, peaking in January. Disconnect garden hoses and shut off outdoor spigots before the first hard frost, and keep the heat at 55°F or higher if you'll be away.
On average the first fall freeze arrives around Oct 22 and the last spring freeze around May 1.
Tuscola gets fewer downpours than most Michigan counties, but they still fill basements. About 3.4 days a year bring an inch or more (60th of 83), most often in August, out of 32.8 inches of total precipitation. On August 3, 2015, 2.37 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 3.15 inches (through September 24, 2021).
About 88 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
Michigan's 83 counties range widely in housing age; Tuscola ranks 14th, with 68% of its homes built before 1980.
In Tuscola County 39% of homes are older than 1960. If yours is one of them and the plumbing has never been replaced, expect galvanized steel supply pipe and cast iron drain lines, the two materials most likely to fail quietly.
The 1980s and 1990s account for 22% 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.
9% of homes are manufactured or mobile homes, above 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
About 18 nights a year in Tuscola County stay at 65°F or warmer, a sign of muggy summer air (29th of 83 counties). August is the wettest month. 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 expectHeating fuel matters for fire risk. In Tuscola County it's 45% utility gas, 8% electric, 35% propane and 6% wood. Propane heat is more common here than the state median. Have chimneys swept and fuel-burning appliances serviced each fall, and keep three feet clear around stoves and space heaters.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Tuscola County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Huron gets more pipe-freeze nights than Tuscola. Bay County has the oldest housing nearby, with 75% of homes built before 1980.
By the numbers
| Factor | Tuscola | Michigan median | Rank |
|---|---|---|---|
| Homes built before 1960 | 39% | 32% | 24 of 83 |
| Homes built before 1980 | 68% | 58% | 14 of 83 |
| Homes built 2000 or later | 10% | 16% | 80 of 83 |
| Manufactured or mobile homes | 8.9% | 7.3% | 26 of 83 |
| Vacant homes | 11% | 20% | 60 of 83 |
| Wood or propane heat | 41% | 29% | 24 of 83 |
| Nights at 20°F or colder | 45/yr | 54/yr | 55 of 83 |
| Days with 1 inch+ of rain | 3.4/yr | 3.9/yr | 60 of 83 |
| Freeze-thaw days | 88/yr | 95/yr | 67 of 83 |
| Muggy nights (65°F+) | 18/yr | 10/yr | 29 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 Tuscola County: freezing from November to March, 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