Will Pipes Freeze in Montezuma County, CO? 68 nights a Year
Freeze nights in Montezuma County
In a normal year Montezuma County, CO gets 68 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 76% 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 | 68 nights |
| Insulated pipe in unheated space | 10°F | 21 nights |
| Inside the heated house | 0°F | 4 nights |
Foam-sleeving a bare pipe in unheated space takes it from 68 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 10/07, last around 05/12. For 20°F: 11/08 to 03/29.
How cold Montezuma County nights get
Average winter (Dec-Feb) low: 19°F; the coldest month, January, averages 17°F overnight. 9 months normally bring at least one night below 32°F (Jan, Feb, Mar, Apr, May, 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: 21 nights a year, and 4 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 17°F | 22°F | 28°F | 33°F | 41°F | 49°F | 57°F | 56°F | 48°F | 36°F | 26°F | 18°F |
Montezuma County next to its neighbours
Dolores County, CO, 45 km north, gets 70 nights below 20°F to Montezuma County's 68 nights. San Juan County, NM, 95 km south, gets 48 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Montezuma County, CO | - | 168 nights | 68 nights | 17°F |
| Dolores County, CO | 45 km north | 164 nights | 70 nights | 17°F |
| La Plata County, CO | 67 km east | 187 nights | 85 nights | 12°F |
| San Miguel County, CO | 76 km north | 210 nights | 111 nights | 7°F |
| San Juan County, NM | 95 km south | 141 nights | 48 nights | 20°F |
| San Juan County, CO | 95 km northeast | 268 nights | 170 nights | -5°F |
| San Juan County, UT | 110 km west | 149 nights | 51 nights | 19°F |
Montezuma County within CO
Montezuma County ranks 56 of 64 CO counties for nights below 20°F. The most is Summit County, CO at 177 nights, with a 5°F average winter low. The fewest is Mesa County, CO: 44 nights, winter lows near 21°F. At 6,158 ft, Montezuma County sits 722 ft below the state's median county elevation of 6,880 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.
At this many nights, foam alone is not the answer: insulate or heat tape?.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Cortez, CO, 1 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.