Will Pipes Freeze in Warren County, TN? 14 nights a Year
Freeze nights in Warren County
In a normal year Warren County, TN gets 14 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 30% of US counties.
Risk level: Regular. 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 | 69 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 14 nights |
| Insulated pipe in unheated space | 10°F | 2 nights |
| Inside the heated house | 0°F | under 1 night |
Foam-sleeving a bare pipe in unheated space takes it from 14 nights of risk to 2 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 10/30, last around 04/07. For 20°F: 12/04 to 02/27.
How cold Warren County nights get
Average winter (Dec-Feb) low: 33°F; the coldest month, January, averages 31°F overnight. 7 months normally bring at least one night below 32°F (Jan, Feb, Mar, Apr, Oct, Nov, Dec). Nights below 10°F, cold enough to freeze insulated pipe in an unheated space, come in January: 2 nights a year, and under 1 night below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 31°F | 34°F | 40°F | 48°F | 57°F | 64°F | 68°F | 67°F | 60°F | 49°F | 39°F | 34°F |
Warren County next to its neighbours
Van Buren County, TN, 29 km east, gets 29 nights below 20°F to Warren County's 14 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Warren County, TN | - | 69 nights | 14 nights | 31°F |
| Van Buren County, TN | 29 km east | 98 nights | 29 nights | 26°F |
| Cannon County, TN | 30 km northwest | 93 nights | 25 nights | 27°F |
| Grundy County, TN | 32 km south | 102 nights | 30 nights | 26°F |
| DeKalb County, TN | 34 km north | 97 nights | 25 nights | 26°F |
| Coffee County, TN | 34 km southwest | 93 nights | 25 nights | 27°F |
| White County, TN | 40 km northeast | 83 nights | 19 nights | 28°F |
Warren County within TN
Warren County ranks 88 of 95 TN counties for nights below 20°F. The most is Johnson County, TN at 41 nights, with a 25°F average winter low. The fewest is Hamilton County, TN: 9 nights, winter lows near 34°F. At 931 ft, Warren County sits 64 ft above the state's median county elevation of 867 ft.
What to do here
- Insulate every pipe in unheated space before the season starts.
- Heat tape on the runs you cannot insulate well.
- Shut off and drain outdoor spigots for the season.
Why 20°F is the line for a garage pipe: how cold before pipes freeze.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Mc Minnville, TN, 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.