Will Pipes Freeze in Lawrence County, TN? 18 nights a Year
Freeze nights in Lawrence County
In a normal year Lawrence 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 March, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 81 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 18 nights |
| Insulated pipe in unheated space | 10°F | 3 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 3 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 10/31, last around 04/08. For 20°F: 12/04 to 02/26.
How cold Lawrence County nights get
Average winter (Dec-Feb) low: 30°F; the coldest month, January, averages 28°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, December: 3 nights a year, and under 1 night below zero.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 28°F | 31°F | 38°F | 46°F | 56°F | 64°F | 68°F | 66°F | 59°F | 47°F | 37°F | 31°F |
Lawrence County next to its neighbours
Giles County, TN, 33 km east, gets 21 nights below 20°F to Lawrence County's 18 nights. Lauderdale County, AL, 42 km southwest, gets 9 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Lawrence County, TN | - | 81 nights | 18 nights | 28°F |
| Giles County, TN | 33 km east | 90 nights | 21 nights | 26°F |
| Lewis County, TN | 35 km north | 77 nights | 20 nights | 28°F |
| Wayne County, TN | 39 km west | 98 nights | 25 nights | 27°F |
| Lauderdale County, AL | 42 km southwest | 62 nights | 9 nights | 31°F |
| Maury County, TN | 53 km northeast | 93 nights | 23 nights | 27°F |
| Limestone County, AL | 59 km southeast | 64 nights | 11 nights | 33°F |
Lawrence County within TN
Lawrence County ranks 60 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, Lawrence 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 Lawrenceburg Filt Plt, TN, 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.