Will Pipes Freeze in Humphreys County, TN? 18 nights a Year
Freeze nights in Humphreys County
In a normal year Humphreys County, TN gets 18 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 35% of US counties.
Risk level: Regular. The risk season runs November to February, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 77 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 18 nights |
| Insulated pipe in unheated space | 10°F | 4 nights |
| Inside the heated house | 0°F | under 1 night |
Foam-sleeving a bare pipe in unheated space takes it from 18 nights of risk to 4 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 11/04, last around 04/02. For 20°F: 12/07 to 02/23.
How cold Humphreys County nights get
Average winter (Dec-Feb) low: 30°F; the coldest month, January, averages 27°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, February, December: 4 nights a year, and under 1 night below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 27°F | 32°F | 40°F | 48°F | 57°F | 65°F | 69°F | 67°F | 60°F | 50°F | 39°F | 32°F |
Humphreys County next to its neighbours
Houston County, TN, 28 km north, gets 22 nights below 20°F to Humphreys County's 18 nights. Benton County, TN, 25 km west, gets 17 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Humphreys County, TN | - | 77 nights | 18 nights | 27°F |
| Benton County, TN | 25 km west | 80 nights | 17 nights | 28°F |
| Houston County, TN | 28 km north | 82 nights | 22 nights | 26°F |
| Hickman County, TN | 39 km southeast | 88 nights | 24 nights | 28°F |
| Dickson County, TN | 40 km east | 92 nights | 26 nights | 27°F |
| Perry County, TN | 43 km south | 91 nights | 22 nights | 27°F |
| Stewart County, TN | 46 km north | 79 nights | 19 nights | 27°F |
Humphreys County within TN
Humphreys County ranks 59 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 587 ft, Humphreys County sits 280 ft below 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.
When to have the house ready: when freeze season starts.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Waverly Airport, TN, 9 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.