Ponchatoula, LA 70454 Frost Dates
70454, near Ponchatoula, LA: the frost window
The last spring frost here typically falls around 03/08, about 192 days from today. Fall's first freeze usually shows up around 11/19, roughly 257 days after the last spring frost.
Ponchatoula sits in USDA Zone 9a (20 to 25°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Ponchatoula'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.
Why 03/08 isn't a guarantee
03/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/31 and only about 1 year in 10 sees frost after that.
Ponchatoula against the rest of the dataset
Ponchatoula's growing season runs about 257 days, ranking 6,689 of 40,283 US ZIP codes measured here, longest to shortest. Within LA, it ranks 513 of 710.
Learn more
Two guides worth reading on 70454: zone vs. frost date, on why Zone 9a and Ponchatoula's frost date answer different questions, and the frost range, on how to read the range around Ponchatoula's dates instead of trusting one.