Gretna, LA 70163 Frost Dates
Gretna, LA: when does the frost end?
The last spring frost here typically falls around 02/01, about 157 days from today. Fall's first freeze usually shows up around 12/31, roughly 330 days after the last spring frost.
Zone 9b (25 to 30°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Gretna, not a forecast for this year.
Stretching the season past the first frost
With roughly 18 weeks until Gretna's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Gretna's last frost
02/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/06 and only about 1 year in 10 sees frost after that.
Gretna against the rest of the dataset
Gretna's growing season runs about 330 days, ranking 3,013 of 40,283 US ZIP codes measured here, longest to shortest. Within LA, it ranks 52 of 710.
Learn more
Before leaning on 70163's figures: local microclimates explains what one yard in Gretna can differ from the 70163 normal, while zone vs. frost date explains why Zone 9b and Gretna's frost date answer different questions.