Will Pipes Freeze in Sandoval County, NM? 72 nights a Year
Freeze nights in Sandoval County
In a normal year Sandoval County, NM gets 72 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 77% of US counties.
Risk level: Severe. The risk season runs October to April, worst in December.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 173 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 72 nights |
| Insulated pipe in unheated space | 10°F | 22 nights |
| Inside the heated house | 0°F | 4 nights |
Foam-sleeving a bare pipe in unheated space takes it from 72 nights of risk to 22 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 10/11, last around 05/09. For 20°F: 11/12 to 03/19.
How cold Sandoval County nights get
Average winter (Dec-Feb) low: 19°F; the coldest month, January, averages 17°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: 22 nights a year, and 4 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 17°F | 21°F | 27°F | 32°F | 40°F | 49°F | 56°F | 54°F | 47°F | 35°F | 25°F | 18°F |
Sandoval County next to its neighbours
Rio Arriba County, NM, 93 km north, gets 118 nights below 20°F to Sandoval County's 72 nights. Los Alamos County, NM, 56 km east, gets 51 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Sandoval County, NM | - | 173 nights | 72 nights | 17°F |
| Los Alamos County, NM | 56 km east | 150 nights | 51 nights | 20°F |
| Bernalillo County, NM | 73 km south | 125 nights | 41 nights | 22°F |
| Santa Fe County, NM | 85 km east | 158 nights | 57 nights | 19°F |
| Rio Arriba County, NM | 93 km north | 217 nights | 118 nights | 9°F |
| Valencia County, NM | 108 km south | 149 nights | 63 nights | 19°F |
| McKinley County, NM | 124 km west | 206 nights | 109 nights | 13°F |
Sandoval County within NM
Sandoval County ranks 10 of 33 NM counties for nights below 20°F. The most is Rio Arriba County, NM at 118 nights, with a 11°F average winter low. The fewest is Sierra County, NM: 6 nights, winter lows near 31°F. At 6,578 ft, Sandoval County sits 974 ft above the state's median county elevation of 5,604 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 Jemez Springs, NM, 21 km away (fair match). A normal year, not tonight's forecast: check the forecast low for the night itself. Why elevation is part of the blend: how county numbers are made.