Will Pipes Freeze in Western Connecticut Planning Region, CT? 48 nights a Year
Freeze nights in Western Connecticut Planning Region
In a normal year Western Connecticut Planning Region, CT gets 48 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 63% of US counties.
Risk level: Severe. The risk season runs November to March, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 130 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 48 nights |
| Insulated pipe in unheated space | 10°F | 15 nights |
| Inside the heated house | 0°F | 3 nights |
Foam-sleeving a bare pipe in unheated space takes it from 48 nights of risk to 15 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: 11/19 to 03/22.
How cold Western Connecticut Planning Region nights get
Average winter (Dec-Feb) low: 22°F; the coldest month, January, averages 19°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, December: 15 nights a year, and 3 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 19°F | 21°F | 28°F | 38°F | 48°F | 57°F | 63°F | 61°F | 53°F | 42°F | 32°F | 25°F |
Western Connecticut Planning Region next to its neighbours
Putnam County, NY, 30 km northwest, gets 56 nights below 20°F to Western Connecticut Planning Region's 48 nights. Greater Bridgeport Planning Region, CT, 22 km southeast, gets 28 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Western Connecticut Planning Region, CT | - | 130 nights | 48 nights | 19°F |
| Greater Bridgeport Planning Region, CT | 22 km southeast | 96 nights | 28 nights | 24°F |
| Westchester County, NY | 29 km southwest | 115 nights | 40 nights | 19°F |
| Putnam County, NY | 30 km northwest | 131 nights | 56 nights | 17°F |
| Naugatuck Valley Planning Region, CT | 40 km northeast | 131 nights | 48 nights | 19°F |
| Rockland County, NY | 50 km west | 120 nights | 43 nights | 18°F |
| South Central Connecticut Planning Region, CT | 51 km east | 106 nights | 32 nights | 23°F |
Western Connecticut Planning Region within CT
Western Connecticut Planning Region ranks 3 of 9 CT counties for nights below 20°F. The most is Northwest Hills Planning Region, CT at 69 nights, with a 17°F average winter low. The fewest is Greater Bridgeport Planning Region, CT: 28 nights, winter lows near 26°F. At 461 ft, Western Connecticut Planning Region sits 169 ft above the state's median county elevation of 293 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 Danbury Municipal Airport, CT, 11 km away (close 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.