Will Pipes Freeze in Duval County, TX? under 1 night a Year
Freeze nights in Duval County
In a normal year Duval 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 | 13 nights |
| Bare pipe in garage, attic or outside wall | 20°F | under 1 night |
| Insulated pipe in unheated space | 10°F | none |
| Inside the heated house | 0°F | none |
Foam-sleeving a bare pipe in unheated space takes it from under 1 night of risk to none. 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 12/01, last around 02/20. For 20°F: 01/05 to 01/07.
How cold Duval County nights get
Average winter (Dec-Feb) low: 46°F; the coldest month, January, averages 44°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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 44°F | 48°F | 55°F | 61°F | 69°F | 73°F | 74°F | 74°F | 70°F | 62°F | 52°F | 45°F |
Duval County next to its neighbours
Jim Wells County, TX, 40 km east, gets none.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Duval County, TX | - | 13 nights | under 1 night | 44°F |
| Jim Wells County, TX | 40 km east | 4 nights | none | 47°F |
| Jim Hogg County, TX | 74 km south | 7 nights | under 1 night | 46°F |
| Brooks County, TX | 77 km south | 9 nights | under 1 night | 44°F |
| McMullen County, TX | 79 km north | 12 nights | under 1 night | 43°F |
| Live Oak County, TX | 83 km northeast | 8 nights | under 1 night | 43°F |
| Webb County, TX | 83 km west | 7 nights | none | 45°F |
Duval County within TX
Duval County ranks 213 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 490 ft, Duval County sits 502 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.
Why rare cold catches people out - freezes 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 Benavides 2, TX, 12 km away (close match). A normal year, not tonight's forecast: check the forecast low for the night itself. What a "fair" or "distant" station match means is in the method guide.