Montgomery, LA 71454 Frost Dates
71454, near Montgomery, LA: the frost window
Typically, the last spring freeze lands around 02/28, roughly 184 days out. Fall's first freeze usually shows up around 12/01, roughly 275 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Montgomery 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
Montgomery's growing season runs out in roughly 14 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 02/28 isn't a guarantee
02/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/17 and only about 1 year in 10 sees frost after that.
Montgomery against the rest of the dataset
Montgomery's growing season runs about 275 days, ranking 5,128 of 40,283 US ZIP codes measured here, longest to shortest. Within LA, it ranks 302 of 710.
Learn more
Two guides worth reading on 71454: local microclimates, on what one yard in Montgomery can differ from the 71454 normal, and zone vs. frost date, on why Zone 9a and Montgomery's frost date answer different questions.