Will Pipes Freeze in Calumet County, WI? 81 nights a Year
Freeze nights in Calumet County
In a normal year Calumet County, WI gets 81 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 83% 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 | 156 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 81 nights |
| Insulated pipe in unheated space | 10°F | 41 nights |
| Inside the heated house | 0°F | 20 nights |
Foam-sleeving a bare pipe in unheated space takes it from 81 nights of risk to 41 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 10/14, last around 05/01. For 20°F: 11/17 to 04/01.
How cold Calumet County nights get
Average winter (Dec-Feb) low: 13°F; the coldest month, January, averages 10°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, November, December: 41 nights a year, and 20 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10°F | 12°F | 22°F | 34°F | 45°F | 56°F | 60°F | 58°F | 50°F | 39°F | 28°F | 17°F |
Calumet County next to its neighbours
Outagamie County, WI, 43 km northwest, gets 85 nights below 20°F to Calumet County's 81 nights. Winnebago County, WI, 36 km west, gets 77 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Calumet County, WI | - | 156 nights | 81 nights | 10°F |
| Winnebago County, WI | 36 km west | 146 nights | 77 nights | 10°F |
| Fond du Lac County, WI | 42 km southwest | 143 nights | 71 nights | 11°F |
| Outagamie County, WI | 43 km northwest | 161 nights | 85 nights | 9°F |
| Brown County, WI | 47 km north | 154 nights | 79 nights | 10°F |
| Manitowoc County, WI | 51 km east | 140 nights | 69 nights | 12°F |
| Sheboygan County, WI | 54 km southeast | 135 nights | 66 nights | 14°F |
Calumet County within WI
Calumet County ranks 47 of 72 WI counties for nights below 20°F. The most is Vilas County, WI at 116 nights, with a 4°F average winter low. The fewest is Racine County, WI: 55 nights, winter lows near 19°F. At 926 ft, Calumet County sits 69 ft below the state's median county elevation of 995 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.
The dates to be done by: when freeze season starts and ends.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Chilton, WI, 7 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.