Will Pipes Freeze in St. Joseph County, MI? 60 nights a Year
Freeze nights in St. Joseph County
In a normal year St. Joseph County, MI gets 60 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 71% of US counties.
Risk level: Severe. The risk season runs November to April, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 143 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 60 nights |
| Insulated pipe in unheated space | 10°F | 24 nights |
| Inside the heated house | 0°F | 7 nights |
Foam-sleeving a bare pipe in unheated space takes it from 60 nights of risk to 24 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 10/17, last around 04/30. For 20°F: 11/23 to 03/29.
How cold St. Joseph County nights get
Average winter (Dec-Feb) low: 19°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: 24 nights a year, and 7 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 17°F | 18°F | 26°F | 37°F | 48°F | 57°F | 61°F | 59°F | 51°F | 41°F | 31°F | 23°F |
St. Joseph County next to its neighbours
LaGrange County, IN, 31 km south, gets 62 nights below 20°F to St. Joseph County's 60 nights. Kalamazoo County, MI, 37 km north, gets 51 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| St. Joseph County, MI | - | 143 nights | 60 nights | 17°F |
| LaGrange County, IN | 31 km south | 140 nights | 62 nights | 17°F |
| Kalamazoo County, MI | 37 km north | 129 nights | 51 nights | 18°F |
| Branch County, MI | 38 km east | 137 nights | 56 nights | 16°F |
| Cass County, MI | 39 km west | 134 nights | 53 nights | 18°F |
| Elkhart County, IN | 45 km southwest | 127 nights | 49 nights | 18°F |
| Steuben County, IN | 52 km southeast | 145 nights | 63 nights | 16°F |
St. Joseph County within MI
St. Joseph County ranks 62 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 884 ft, St. Joseph County sits 76 ft above 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.
At this many nights, foam alone is not the answer: insulate or heat tape?.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Three Rivers, MI, 10 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.