Will Pipes Freeze in San Augustine County, TX? 2 nights a Year
Freeze nights in San Augustine County
In a normal year San Augustine County, TX gets 2 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 10% of US counties.
Risk level: Occasional. The risk season runs January to January, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 37 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 2 nights |
| 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 2 nights 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 11/13, last around 03/18. For 20°F: 12/30 to 01/26.
How cold San Augustine County nights get
Average winter (Dec-Feb) low: 38°F; the coldest month, January, averages 36°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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 36°F | 40°F | 46°F | 53°F | 62°F | 69°F | 71°F | 71°F | 65°F | 54°F | 45°F | 38°F |
San Augustine County next to its neighbours
Shelby County, TX, 45 km north, gets 3 nights below 20°F to San Augustine County's 2 nights. Angelina County, TX, 45 km west, gets 1 night.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| San Augustine County, TX | - | 37 nights | 2 nights | 36°F |
| Sabine County, TX | 30 km east | 33 nights | 2 nights | 37°F |
| Angelina County, TX | 45 km west | 33 nights | 1 night | 37°F |
| Shelby County, TX | 45 km north | 42 nights | 3 nights | 36°F |
| Nacogdoches County, TX | 51 km northwest | 41 nights | 2 nights | 36°F |
| Sabine Parish, LA | 61 km east | 37 nights | 2 nights | 36°F |
| Tyler County, TX | 71 km south | 31 nights | 1 night | 38°F |
San Augustine County within TX
San Augustine County ranks 171 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 226 ft, San Augustine County sits 766 ft below the state's median county elevation of 992 ft.
What to do here
- Keep a night-of routine: drip, open cabinets, keep the heat at 55F or above.
- Foam-sleeve any pipe in the garage or crawlspace once; it is cheap and lasts years.
Few hard nights means pipes are rarely built for them; see freezes in warm places.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is San Augustine, TX, 16 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.