Will Pipes Freeze in Greene County, TN? 34 nights a Year
Freeze nights in Greene County
In a normal year Greene County, TN gets 34 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 50% 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 | 108 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 34 nights |
| Insulated pipe in unheated space | 10°F | 6 nights |
| Inside the heated house | 0°F | under 1 night |
Foam-sleeving a bare pipe in unheated space takes it from 34 nights of risk to 6 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 10/22, last around 04/20. For 20°F: 11/21 to 03/14.
How cold Greene County nights get
Average winter (Dec-Feb) low: 28°F; the coldest month, January, averages 26°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, December: 6 nights a year, and under 1 night below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 26°F | 29°F | 34°F | 43°F | 52°F | 61°F | 65°F | 63°F | 57°F | 44°F | 34°F | 29°F |
Greene County next to its neighbours
Hawkins County, TN, 31 km north, gets 21 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Greene County, TN | - | 108 nights | 34 nights | 26°F |
| Hawkins County, TN | 31 km north | 89 nights | 21 nights | 25°F |
| Washington County, TN | 34 km east | 96 nights | 23 nights | 25°F |
| Madison County, NC | 37 km south | 112 nights | 34 nights | 25°F |
| Hamblen County, TN | 38 km west | 82 nights | 18 nights | 27°F |
| Cocke County, TN | 38 km southwest | 81 nights | 15 nights | 29°F |
| Unicoi County, TN | 40 km east | 103 nights | 27 nights | 25°F |
Greene County within TN
Greene County ranks 3 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 1,415 ft, Greene County sits 548 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.
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 Greeneville Experiment Station, TN, 8 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.