Will Pipes Freeze in Shelby County, KY? 55 nights a Year
Freeze nights in Shelby County
In a normal year Shelby County, KY gets 55 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 68% 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 | 135 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 55 nights |
| Insulated pipe in unheated space | 10°F | 15 nights |
| Inside the heated house | 0°F | 5 nights |
Foam-sleeving a bare pipe in unheated space takes it from 55 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 10/10, last around 05/01. For 20°F: 11/09 to 04/01.
How cold Shelby County nights get
Average winter (Dec-Feb) low: 22°F; the coldest month, January, averages 21°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: 15 nights a year, and 5 nights below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 21°F | 22°F | 29°F | 38°F | 50°F | 59°F | 63°F | 59°F | 51°F | 41°F | 30°F | 24°F |
Shelby County next to its neighbours
Spencer County, KY, 25 km south, gets 37 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Shelby County, KY | - | 135 nights | 55 nights | 21°F |
| Spencer County, KY | 25 km south | 109 nights | 37 nights | 22°F |
| Henry County, KY | 25 km north | 115 nights | 40 nights | 23°F |
| Oldham County, KY | 27 km northwest | 106 nights | 34 nights | 23°F |
| Franklin County, KY | 31 km east | 100 nights | 31 nights | 25°F |
| Anderson County, KY | 34 km southeast | 99 nights | 31 nights | 24°F |
| Jefferson County, KY | 38 km west | 78 nights | 20 nights | 27°F |
Shelby County within KY
Shelby County ranks 1 of 120 KY counties for nights below 20°F. The fewest is Lyon County, KY: 15 nights, winter lows near 32°F. At 779 ft, Shelby County sits close to the state's median county elevation of 797 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 Shelbyville (1 mi E), KY, 5 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.