Will Pipes Freeze in Lenawee County, MI? 53 nights a Year
Freeze nights in Lenawee County
In a normal year Lenawee County, MI gets 53 nights at or below 20°F, the point where bare pipes in a garage, attic or outside wall start to freeze. That is more than 66% of US counties.
Risk level: Severe. The risk season runs November to March, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 135 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 53 nights |
| Insulated pipe in unheated space | 10°F | 21 nights |
| Inside the heated house | 0°F | 7 nights |
Foam-sleeving a bare pipe in unheated space takes it from 53 nights of risk to 21 nights. A 12 ft heat-tape kit runs $17 to $37; an average burst-pipe repair is about $500.
Month by month
Nights at or below 20°F in a normal year.
First 32°F night is usually around 10/20, last around 04/27. For 20°F: 11/21 to 03/24.
How cold Lenawee County nights get
Average winter (Dec-Feb) low: 20°F; the coldest month, January, averages 17°F overnight. 8 months normally bring at least one night below 32°F (Jan, Feb, Mar, Apr, May, Oct, Nov, Dec). Nights below 10°F, cold enough to freeze insulated pipe in an unheated space, come in January, February, March, December: 21 nights a year, and 7 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 17°F | 19°F | 27°F | 37°F | 48°F | 58°F | 61°F | 60°F | 52°F | 41°F | 31°F | 23°F |
Lenawee County next to its neighbours
Fulton County, OH, 33 km south, gets 56 nights below 20°F to Lenawee County's 53 nights. Monroe County, MI, 49 km east, gets 52 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Lenawee County, MI | - | 135 nights | 53 nights | 17°F |
| Fulton County, OH | 33 km south | 139 nights | 56 nights | 16°F |
| Washtenaw County, MI | 44 km northeast | 150 nights | 66 nights | 15°F |
| Hillsdale County, MI | 47 km west | 148 nights | 66 nights | 15°F |
| Jackson County, MI | 49 km northwest | 137 nights | 57 nights | 17°F |
| Monroe County, MI | 49 km east | 129 nights | 52 nights | 18°F |
| Lucas County, OH | 56 km southeast | 121 nights | 46 nights | 20°F |
Lenawee County within MI
Lenawee County ranks 74 of 83 MI counties for nights below 20°F. The most is Iron County, MI at 120 nights, with a 3°F average winter low. The fewest is Allegan County, MI: 38 nights, winter lows near 24°F. At 824 ft, Lenawee County sits close to the state's median county elevation of 808 ft.
What to do here
- Treat it as a building fix, not a night-of routine: insulate, heat tape, seal crawlspace vents.
- An automatic leak shutoff pays for itself if one burst is avoided.
- Know where the main shutoff is before the first hard freeze.
Interior pipes have a threshold too: the four freeze points.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Adrian Lenawee County Airport, MI, 3 km away (close match). A normal year, not tonight's forecast: check the forecast low for the night itself. What a "fair" or "distant" station match means is in the method guide.