Will Pipes Freeze in Walthall County, MS? 3 nights a Year
Freeze nights in Walthall County
In a normal year Walthall County, MS 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 | 36 nights |
| Bare pipe in garage, attic or outside wall | 20°F | 3 nights |
| 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 3 nights 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 11/16, last around 03/15. For 20°F: 01/03 to 01/29.
How cold Walthall County nights get
Average winter (Dec-Feb) low: 39°F; the coldest month, January, averages 37°F overnight. 6 months normally bring at least one night below 32°F (Jan, Feb, Mar, Oct, Nov, Dec).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 37°F | 40°F | 47°F | 53°F | 62°F | 69°F | 71°F | 71°F | 67°F | 55°F | 45°F | 40°F |
Walthall County next to its neighbours
Lawrence County, MS, 43 km north, gets 4 nights below 20°F to Walthall County's 3 nights. Marion County, MS, 28 km east, gets 2 nights.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Walthall County, MS | - | 36 nights | 3 nights | 37°F |
| Marion County, MS | 28 km east | 37 nights | 2 nights | 38°F |
| Pike County, MS | 28 km west | 31 nights | 2 nights | 38°F |
| Washington Parish, LA | 35 km south | 31 nights | 2 nights | 38°F |
| Lawrence County, MS | 43 km north | 45 nights | 4 nights | 36°F |
| Jefferson Davis County, MS | 52 km northeast | 41 nights | 3 nights | 36°F |
| Lincoln County, MS | 53 km northwest | 47 nights | 3 nights | 36°F |
Walthall County within MS
Walthall County ranks 63 of 82 MS counties for nights below 20°F. The most is Tishomingo County, MS at 24 nights, with a 30°F average winter low. The fewest is Harrison County, MS: under 1 night, winter lows near 45°F. At 313 ft, Walthall County sits close to the state's median county elevation of 302 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 Tylertown (5 mi ESE), MS, 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.