Gretna, LA 70112 Frost Dates
Gretna, LA: when does the frost end?
Around 02/01 is the usual last spring frost, about 157 days away. Fall's first freeze usually shows up around 12/31, roughly 330 days after the last spring frost.
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.
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
About 330 days separate Gretna's last and first frost, putting it 3,008 of 40,283 ZIP codes nationally. Within LA, it ranks 47 of 710.
Learn more
Before leaning on 70112's figures: local microclimates explains what one yard in Gretna can differ from the 70112 normal, while zone vs. frost date explains why Zone 9b and Gretna's frost date answer different questions.