Will Pipes Freeze in St. John the Baptist Parish, LA? under 1 night a Year
Freeze nights in St. John the Baptist Parish
In a normal year St. John the Baptist 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 3% of US counties.
Risk level: Rare.
It depends where the pipe is
| Pipe | Freezes near | Nights a year |
|---|---|---|
| Outdoor spigot, open crawlspace | 32°F | 13 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 12/14, last around 02/09. For 20°F: 01/13 to 01/19.
How cold St. John the Baptist Parish 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 | 47°F | 52°F | 59°F | 66°F | 73°F | 75°F | 75°F | 71°F | 61°F | 51°F | 46°F |
St. John the Baptist Parish next to its neighbours
Livingston Parish, LA, 40 km northwest, gets 1 night below 20°F to St. John the Baptist Parish's under 1 night.
| County | Distance | Below 32°F | Below 20°F | Jan low |
|---|---|---|---|---|
| St. John the Baptist Parish, LA | - | 13 nights | under 1 night | 43°F |
| St. Charles Parish, LA | 29 km southeast | 6 nights | under 1 night | 46°F |
| St. James Parish, LA | 32 km southwest | 14 nights | under 1 night | 43°F |
| Livingston Parish, LA | 40 km northwest | 29 nights | 1 night | 39°F |
| Ascension Parish, LA | 41 km west | 15 nights | under 1 night | 42°F |
| Tangipahoa Parish, LA | 54 km north | 33 nights | 1 night | 39°F |
| Orleans Parish, LA | 54 km east | 4 nights | under 1 night | 46°F |
St. John the Baptist Parish within LA
St. John the Baptist Parish ranks 53 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, St. John the Baptist Parish sits 69 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 Reserve, LA, 13 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.