Will Pipes Freeze in Atascosa County, TX? under 1 night a Year
Freeze nights in Atascosa County
In a normal year Atascosa County, TX gets under 1 night at or below 20°F, the point where bare pipes in a garage, attic or outside wall start to freeze. That is more than 5% of US counties.
Risk level: Rare.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 19 nights |
| Bare pipe in garage, attic or outside wall | 20°F | under 1 night |
| Insulated pipe in unheated space | 10°F | under 1 night |
| Inside the heated house | 0°F | none |
Foam-sleeving a bare pipe in unheated space takes it from under 1 night of risk to under 1 night. 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 11/28, last around 02/27. For 20°F: 01/02 to 01/08.
How cold Atascosa County nights get
Average winter (Dec-Feb) low: 43°F; the coldest month, January, averages 41°F overnight. 5 months normally bring at least one night below 32°F (Jan, Feb, Mar, Nov, Dec).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 41°F | 45°F | 52°F | 58°F | 67°F | 72°F | 74°F | 74°F | 69°F | 60°F | 50°F | 42°F |
Atascosa County next to its neighbours
The six closest counties all sit within a night of Atascosa County.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Atascosa County, TX | - | 19 nights | under 1 night | 41°F |
| Wilson County, TX | 54 km northeast | 25 nights | 1 night | 39°F |
| Frio County, TX | 56 km west | 11 nights | under 1 night | 42°F |
| McMullen County, TX | 56 km south | 12 nights | under 1 night | 43°F |
| Bexar County, TX | 62 km north | 19 nights | under 1 night | 41°F |
| Karnes County, TX | 67 km east | 11 nights | under 1 night | 42°F |
| Live Oak County, TX | 72 km southeast | 8 nights | under 1 night | 43°F |
Atascosa County within TX
Atascosa County ranks 211 of 254 TX counties for nights below 20°F. The most is Lipscomb County, TX at 57 nights, with a 20°F average winter low. The fewest is Cameron County, TX: none, winter lows near 54°F. At 419 ft, Atascosa County sits 573 ft below the state's median county elevation of 992 ft.
What to do here
- Watch the forecast for a sub-threshold night.
- That night: drip the faucet on an outside wall, open the sink cabinet.
A few nights a year catches houses that were never built for it: pipes in places that rarely freeze.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Pleasanton, TX, 10 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.