Gretna, LA 70119 Frost Dates
Frost dates for Gretna, LA, ZIP 70119
Typically, the last spring freeze lands around 01/24, roughly 149 days out. The first fall frost typically arrives around 01/02, about 341 frost-free days later.
Gretna sits in USDA Zone 9b (25 to 30°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.
What to do before the first frost
Zone 9b around Gretna has about 18 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
01/24 is the middle of 30 years of NOAA records, not a promise. Plant by 02/23 and you're betting against frost in roughly 9 years out of 10. 12/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Gretna compares
About 341 days separate Gretna's last and first frost, putting it 2,604 of 40,283 ZIP codes nationally. Within LA, it ranks 14 of 710.
Learn more
local microclimates explains what one yard in Gretna can differ from the 70119 normal, and zone vs. frost date explains why Zone 9b and Gretna's frost date answer different questions.