Will Pipes Freeze in Harrison County, MS? under 1 night a Year
Freeze nights in Harrison County
In a normal year Harrison County, MS 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 4% of US counties.
Risk level: Rare.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 16 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 |
Month by month
Nights at or below 20°F in a normal year.
First 32°F night is usually around 12/03, last around 02/23. For 20°F: 01/11 to 01/14.
How cold Harrison County nights get
Average winter (Dec-Feb) low: 45°F; the coldest month, January, averages 43°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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 43°F | 46°F | 52°F | 59°F | 67°F | 73°F | 75°F | 75°F | 71°F | 60°F | 49°F | 45°F |
Harrison County next to its neighbours
Hancock County, MS, 38 km west, gets 1 night below 20°F to Harrison County's under 1 night.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Harrison County, MS | - | 16 nights | under 1 night | 43°F |
| Hancock County, MS | 38 km west | 26 nights | 1 night | 40°F |
| Stone County, MS | 42 km north | 38 nights | 3 nights | 37°F |
| Jackson County, MS | 44 km east | 26 nights | under 1 night | 40°F |
| St. Bernard Parish, LA | 58 km south | 14 nights | under 1 night | 43°F |
| Pearl River County, MS | 63 km northwest | 27 nights | 2 nights | 39°F |
| George County, MS | 65 km northeast | 28 nights | 2 nights | 39°F |
Harrison County within MS
Harrison County ranks 82 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. At 13 ft, Harrison County sits 289 ft below the state's median county elevation of 302 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 Gulfport - Biloxi Airport, MS, 1 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.