Will Pipes Freeze in Ottawa County, MI? 51 nights a Year
Freeze nights in Ottawa County
In a normal year Ottawa County, MI gets 51 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 65% 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 | 134 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 51 nights |
| Insulated pipe in unheated space | 10°F | 16 nights |
| Inside the heated house | 0°F | 3 nights |
Foam-sleeving a bare pipe in unheated space takes it from 51 nights of risk to 16 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 10/24, last around 04/30. For 20°F: 12/03 to 03/28.
How cold Ottawa County nights get
Average winter (Dec-Feb) low: 21°F; the coldest month, January, averages 19°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: 16 nights a year, and 3 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 19°F | 20°F | 26°F | 36°F | 47°F | 57°F | 62°F | 60°F | 53°F | 43°F | 33°F | 25°F |
Ottawa County next to its neighbours
Muskegon County, MI, 45 km north, gets 54 nights below 20°F to Ottawa County's 51 nights. Kent County, MI, 55 km east, gets 49 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Ottawa County, MI | - | 134 nights | 51 nights | 19°F |
| Muskegon County, MI | 45 km north | 144 nights | 54 nights | 19°F |
| Kent County, MI | 55 km east | 139 nights | 49 nights | 17°F |
| Oceana County, MI | 64 km north | 151 nights | 62 nights | 17°F |
| Newaygo County, MI | 66 km northeast | 160 nights | 72 nights | 14°F |
| Allegan County, MI | 71 km south | 110 nights | 38 nights | 22°F |
| Van Buren County, MI | 86 km south | 118 nights | 42 nights | 21°F |
Ottawa County within MI
Ottawa County ranks 79 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 604 ft, Ottawa County sits 204 ft below 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 Grand Haven Wastewater Plant, MI, 1 km away (close match). A normal year, not tonight's forecast: check the forecast low for the night itself. How a county figure is built from stations: how the numbers are made.