Harahan, LA 70001 Frost Dates
When can you plant in Harahan, LA?
The last spring frost here typically falls around 01/30, about 155 days from today. The first fall frost typically arrives around 12/31, about 333 frost-free days later.
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.
What to do before the first frost
About 18 weeks of growing season left in Harahan before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Harahan's last frost
01/30 is the middle of 30 years of NOAA records, not a promise. Plant by 02/27 and you're betting against frost in roughly 9 years out of 10. 12/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Harahan compares
At roughly 333 frost-free days, Harahan places 2,843 of 40,283 ZIP codes in this dataset. Within LA, it ranks 40 of 710.
Learn more
zone vs. frost date covers why Zone 9b and Harahan's frost date answer different questions. the frost range covers how to read the range around Harahan's dates instead of trusting one.