Port Allen, LA 70802 Frost Dates
When can you plant in Port Allen, LA?
Around 02/28 is the usual last spring frost, about 184 days away. The first fall frost typically arrives around 11/26, about 272 frost-free days later.
The USDA Plant Hardiness Zone Map puts Port Allen in Zone 9a (20 to 25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 13 weeks of growing season left in Port Allen before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Port Allen's last frost
02/28 is the middle of 30 years of NOAA records, not a promise. Plant by 01/31 and you're betting against frost in roughly 9 years out of 10. 03/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Port Allen compares
About 272 days separate Port Allen's last and first frost, putting it 5,383 of 40,283 ZIP codes nationally. Within LA, it ranks 327 of 710.
Learn more
local microclimates covers what one yard in Port Allen can differ from the 70802 normal. zone vs. frost date covers why Zone 9a and Port Allen's frost date answer different questions.