Will Pipes Freeze in Box Elder County, UT? 73 nights a Year
Freeze nights in Box Elder County
In a normal year Box Elder County, UT gets 73 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 78% of US counties.
Risk level: Severe. The risk season runs October to April, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 168 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 73 nights |
| Insulated pipe in unheated space | 10°F | 26 nights |
| Inside the heated house | 0°F | 6 nights |
Foam-sleeving a bare pipe in unheated space takes it from 73 nights of risk to 26 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 10/05, last around 05/12. For 20°F: 11/03 to 03/22.
How cold Box Elder County nights get
Average winter (Dec-Feb) low: 16°F; the coldest month, December, averages 15°F overnight. 10 months normally bring at least one night below 32°F (Jan, Feb, Mar, Apr, May, Jun, Sep, Oct, Nov, Dec). Nights below 10°F, cold enough to freeze insulated pipe in an unheated space, come in January, February, March, November, December: 26 nights a year, and 6 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 15°F | 17°F | 27°F | 33°F | 41°F | 49°F | 57°F | 55°F | 45°F | 32°F | 23°F | 15°F |
Box Elder County next to its neighbours
Oneida County, ID, 77 km northeast, gets 76 nights below 20°F to Box Elder County's 73 nights. Cassia County, ID, 87 km northwest, gets 63 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Box Elder County, UT | - | 168 nights | 73 nights | 15°F |
| Oneida County, ID | 77 km northeast | 181 nights | 76 nights | 15°F |
| Cassia County, ID | 87 km northwest | 163 nights | 63 nights | 18°F |
| Davis County, UT | 97 km southeast | 124 nights | 39 nights | 21°F |
| Weber County, UT | 106 km east | 189 nights | 86 nights | 12°F |
| Cache County, UT | 110 km east | 155 nights | 64 nights | 16°F |
| Franklin County, ID | 119 km northeast | 173 nights | 73 nights | 15°F |
Box Elder County within UT
Box Elder County ranks 16 of 29 UT counties for nights below 20°F. The most is Rich County, UT at 138 nights, with a 6°F average winter low. The fewest is Salt Lake County, UT: 22 nights, winter lows near 28°F. At 4,204 ft, Box Elder County sits 1,603 ft below the state's median county elevation of 5,807 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 Brigham City (28 mi WNW), UT, 43 km away (distant 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.