Pearl River, LA 70459 Frost Dates
70459, near Pearl River, LA: the frost window
Typically, the last spring freeze lands around 03/03, roughly 187 days out. Fall's first freeze usually shows up around 11/21, roughly 263 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Pearl River in Zone 9a (20 to 25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Pearl River's growing season runs out in roughly 12 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
03/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/26 and only about 1 year in 10 sees frost after that.
Pearl River against the rest of the dataset
About 263 days separate Pearl River's last and first frost, putting it 6,112 of 40,283 ZIP codes nationally. Within LA, it ranks 478 of 710.
Learn more
Two guides worth reading on 70459: local microclimates, on what one yard in Pearl River can differ from the 70459 normal, and zone vs. frost date, on why Zone 9a and Pearl River's frost date answer different questions.