Hammond, LA 70403 Frost Dates
70403, near Hammond, LA: the frost window
Typically, the last spring freeze lands around 03/08, roughly 192 days out. Fall's first freeze usually shows up around 11/19, roughly 257 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Hammond 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
Hammond'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.
Hammond against the rest of the dataset
At roughly 257 frost-free days, Hammond places 6,679 of 40,283 ZIP codes in this dataset. Within LA, it ranks 510 of 710.
Learn more
Two guides worth reading on 70403: the frost range, on how to read the range around Hammond's dates instead of trusting one, and local microclimates, on what one yard in Hammond can differ from the 70403 normal.