Harahan, LA 70121 Frost Dates
Harahan, LA: when does the frost end?
The last spring frost here typically falls around 01/24, about 149 days from today. Fall's first freeze usually shows up around 01/02, roughly 341 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 Harahan, not a forecast for this year.
Stretching the season past the first frost
With roughly 18 weeks until Harahan's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 01/24 isn't a guarantee
01/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/28 and only about 1 year in 10 sees frost after that.
Harahan against the rest of the dataset
About 341 days separate Harahan's last and first frost, putting it 2,607 of 40,283 ZIP codes nationally. Within LA, it ranks 17 of 710.
Learn more
Before leaning on 70121's figures: local microclimates explains what one yard in Harahan can differ from the 70121 normal, while zone vs. frost date explains why Zone 9b and Harahan's frost date answer different questions.