Will Pipes Freeze in St. Joseph County, IN? 51 nights a Year
Freeze nights in St. Joseph County
In a normal year St. Joseph County, IN 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 April, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 133 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 51 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 51 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 10/13, last around 05/01. For 20°F: 11/18 to 03/29.
How cold St. Joseph County nights get
Average winter (Dec-Feb) low: 19°F; the coldest month, January, averages 16°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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 16°F | 18°F | 27°F | 37°F | 48°F | 58°F | 62°F | 60°F | 52°F | 41°F | 31°F | 22°F |
St. Joseph County next to its neighbours
Marshall County, IN, 33 km south, gets 54 nights below 20°F to St. Joseph County's 51 nights. Elkhart County, IN, 35 km east, gets 49 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| St. Joseph County, IN | - | 133 nights | 51 nights | 16°F |
| Marshall County, IN | 33 km south | 132 nights | 54 nights | 17°F |
| Elkhart County, IN | 35 km east | 127 nights | 49 nights | 18°F |
| LaPorte County, IN | 39 km west | 123 nights | 49 nights | 17°F |
| Cass County, MI | 41 km northeast | 134 nights | 53 nights | 18°F |
| Berrien County, MI | 42 km northwest | 120 nights | 46 nights | 18°F |
| Starke County, IN | 48 km southwest | 137 nights | 56 nights | 16°F |
St. Joseph County within IN
St. Joseph County ranks 21 of 92 IN counties for nights below 20°F. The most is Steuben County, IN at 63 nights, with a 19°F average winter low. The fewest is Floyd County, IN: 19 nights, winter lows near 29°F. At 814 ft, St. Joseph County sits 55 ft above the state's median county elevation of 759 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 Lakeville, IN, 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.