Will Pipes Freeze in Harrison County, TX? 3 nights a Year
Freeze nights in Harrison County
In a normal year Harrison County, TX gets 3 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 13% of US counties.
Risk level: Occasional. The risk season runs December to January, worst in January.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 40 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 3 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 3 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 11/11, last around 03/20. For 20°F: 12/28 to 01/30.
How cold Harrison County nights get
Average winter (Dec-Feb) low: 35°F; the coldest month, January, averages 33°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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 33°F | 37°F | 44°F | 51°F | 60°F | 68°F | 71°F | 71°F | 64°F | 52°F | 42°F | 35°F |
Harrison County next to its neighbours
Marion County, TX, 28 km north, gets 5 nights below 20°F to Harrison County's 3 nights. Panola County, TX, 43 km south, gets 2 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Harrison County, TX | - | 40 nights | 3 nights | 33°F |
| Marion County, TX | 28 km north | 54 nights | 5 nights | 34°F |
| Gregg County, TX | 42 km west | 41 nights | 3 nights | 35°F |
| Panola County, TX | 43 km south | 39 nights | 2 nights | 36°F |
| Caddo Parish, LA | 46 km east | 30 nights | 2 nights | 37°F |
| Upshur County, TX | 57 km west | 48 nights | 4 nights | 34°F |
| Cass County, TX | 60 km north | 52 nights | 5 nights | 34°F |
Harrison County within TX
Harrison County ranks 151 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 402 ft, Harrison County sits 591 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.
Whether foam sleeves are enough here: insulate or heat tape?.
Where this comes from
NOAA 1991-2020 climate normals, blended from 3 nearby stations and adjusted for elevation; closest is Marshall, TX, 8 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.