Donaldsonville, LA 70341 Frost Dates
Frost dates for Donaldsonville, LA, ZIP 70341
The last spring frost here typically falls around 02/21, about 177 days from today. The first fall frost typically arrives around 12/05, about 291 frost-free days later.
Donaldsonville sits in USDA Zone 9a (20 to 25°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.
What to do before the first frost
Zone 9a around Donaldsonville has about 14 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
02/21 is the middle of 30 years of NOAA records, not a promise. Plant by 01/23 and you're betting against frost in roughly 9 years out of 10. 03/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Donaldsonville compares
Donaldsonville's growing season runs about 291 days, ranking 4,440 of 40,283 US ZIP codes measured here, longest to shortest. Within LA, it ranks 226 of 710.
Learn more
local microclimates explains what one yard in Donaldsonville can differ from the 70341 normal, and zone vs. frost date explains why Zone 9a and Donaldsonville's frost date answer different questions.