Will Pipes Freeze in DeKalb County, AL? 12 nights a Year
Freeze nights in DeKalb County
In a normal year DeKalb County, AL gets 12 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 29% 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 | 66 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 12 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 12 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 11/08, last around 03/29. For 20°F: 12/26 to 02/06.
How cold DeKalb 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 | 41°F | 48°F | 57°F | 65°F | 69°F | 68°F | 62°F | 50°F | 40°F | 34°F |
DeKalb County next to its neighbours
Jackson County, AL, 37 km northwest, gets 14 nights below 20°F to DeKalb County's 12 nights. Marshall County, AL, 50 km west, gets 6 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| DeKalb County, AL | - | 66 nights | 12 nights | 31°F |
| Jackson County, AL | 37 km northwest | 76 nights | 14 nights | 30°F |
| Chattooga County, GA | 42 km east | 82 nights | 14 nights | 29°F |
| Cherokee County, AL | 46 km south | 75 nights | 12 nights | 29°F |
| Marshall County, AL | 50 km west | 48 nights | 6 nights | 33°F |
| Etowah County, AL | 51 km southwest | 56 nights | 7 nights | 32°F |
| Dade County, GA | 51 km northeast | 79 nights | 14 nights | 31°F |
DeKalb County within AL
DeKalb County ranks 8 of 67 AL counties for nights below 20°F. The most is Marion County, AL at 23 nights, with a 31°F average winter low. The fewest is Mobile County, AL: under 1 night, winter lows near 43°F. At 1,261 ft, DeKalb County sits 826 ft above the state's median county elevation of 435 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 Fort Payne, AL, 8 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.