Will Pipes Freeze in Sevier County, UT? 108 nights a Year
Freeze nights in Sevier County
In a normal year Sevier County, UT gets 108 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 95% of US counties.
Risk level: Severe. The risk season runs October to May, worst in December.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 214 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 108 nights |
| Insulated pipe in unheated space | 10°F | 44 nights |
| Inside the heated house | 0°F | 13 nights |
Foam-sleeving a bare pipe in unheated space takes it from 108 nights of risk to 44 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 09/21, last around 06/06. For 20°F: 10/19 to 04/27.
How cold Sevier County nights get
Average winter (Dec-Feb) low: 13°F; the coldest month, December, averages 11°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: 44 nights a year, and 13 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 12°F | 15°F | 22°F | 27°F | 34°F | 42°F | 50°F | 48°F | 40°F | 29°F | 19°F | 11°F |
Sevier County next to its neighbours
Sanpete County, UT, 73 km north, gets 87 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Sevier County, UT | - | 214 nights | 108 nights | 12°F |
| Piute County, UT | 53 km southwest | 207 nights | 108 nights | 12°F |
| Sanpete County, UT | 73 km north | 188 nights | 87 nights | 11°F |
| Wayne County, UT | 90 km southeast | 138 nights | 58 nights | 18°F |
| Emery County, UT | 99 km east | 171 nights | 85 nights | 13°F |
| Garfield County, UT | 107 km south | 149 nights | 51 nights | 20°F |
| Millard County, UT | 117 km west | 175 nights | 77 nights | 16°F |
Sevier County within UT
Sevier County ranks 4 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 7,071 ft, Sevier County sits 1,263 ft above 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.
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 Koosharem, UT, 27 km away (fair match). A normal year, not tonight's forecast: check the forecast low for the night itself. What a "fair" or "distant" station match means is in the method guide.