Will Pipes Freeze in Waller County, TX? under 1 night a Year
Freeze nights in Waller County
In a normal year Waller 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. 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 | 17 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 12/02, last around 02/28. For 20°F: 01/06 to 01/18.
How cold Waller 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 | 51°F | 58°F | 66°F | 72°F | 73°F | 73°F | 68°F | 59°F | 50°F | 43°F |
Waller County next to its neighbours
The six closest counties all sit within a night of Waller County.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Waller County, TX | - | 17 nights | under 1 night | 41°F |
| Austin County, TX | 31 km southwest | 13 nights | under 1 night | 41°F |
| Washington County, TX | 47 km northwest | 20 nights | under 1 night | 39°F |
| Montgomery County, TX | 56 km northeast | 19 nights | under 1 night | 41°F |
| Fort Bend County, TX | 58 km south | 9 nights | under 1 night | 44°F |
| Grimes County, TX | 59 km north | 23 nights | 1 night | 40°F |
| Harris County, TX | 59 km east | 7 nights | under 1 night | 44°F |
Waller County within TX
Waller County ranks 212 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 253 ft, Waller County sits 740 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 Bellville (6 mi NNE), TX, 23 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.