Gretna, LA 70032 Frost Dates
Frost dates for Gretna, LA, ZIP 70032
Typically, the last spring freeze lands around 02/10, roughly 166 days out. The first fall frost typically arrives around 12/17, about 309 frost-free days later.
The USDA Plant Hardiness Zone Map puts Gretna in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 9b around Gretna has about 16 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Gretna's last frost
02/10 is the middle of 30 years of NOAA records, not a promise. Plant by 01/12 and you're betting against frost in roughly 9 years out of 10. 03/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Gretna compares
About 309 days separate Gretna's last and first frost, putting it 3,641 of 40,283 ZIP codes nationally. Within LA, it ranks 124 of 710.
Learn more
zone vs. frost date explains why Zone 9b and Gretna's frost date answer different questions, and the frost range explains how to read the range around Gretna's dates instead of trusting one.