Will Pipes Freeze in Lafourche Parish, LA? under 1 night a Year
Freeze nights in Lafourche Parish
In a normal year Lafourche Parish, LA 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 | 9 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 12/19, last around 02/08. For 20°F: 01/18 to 01/19.
How cold Lafourche Parish nights get
Average winter (Dec-Feb) low: 47°F; the coldest month, January, averages 45°F overnight. 4 months normally bring at least one night below 32°F (Jan, Feb, Nov, Dec).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 45°F | 48°F | 55°F | 61°F | 68°F | 74°F | 76°F | 76°F | 72°F | 63°F | 52°F | 47°F |
Lafourche Parish next to its neighbours
The six closest counties all sit within a night of Lafourche Parish.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| Lafourche Parish, LA | - | 9 nights | under 1 night | 45°F |
| Jefferson Parish, LA | 35 km east | 8 nights | under 1 night | 45°F |
| St. Charles Parish, LA | 46 km north | 6 nights | under 1 night | 46°F |
| Terrebonne Parish, LA | 47 km west | 9 nights | under 1 night | 44°F |
| St. James Parish, LA | 71 km northwest | 14 nights | under 1 night | 43°F |
| St. John the Baptist Parish, LA | 73 km north | 13 nights | under 1 night | 43°F |
| Orleans Parish, LA | 77 km northeast | 4 nights | under 1 night | 46°F |
Lafourche Parish within LA
Lafourche Parish ranks 51 of 64 LA counties for nights below 20°F. The most is Claiborne Parish, LA at 5 nights, with a 34°F average winter low. The fewest is Plaquemines Parish, LA: none, winter lows near 49°F. At -2 ft, Lafourche Parish sits 73 ft below the state's median county elevation of 70 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 Galliano, LA, 9 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.