Mangham, LA 71259 Frost Dates
Frost dates for Mangham, LA, ZIP 71259
Typically, the last spring freeze lands around 03/07, roughly 191 days out. The first fall frost typically arrives around 11/13, about 252 frost-free days later.
Zone 8b (15 to 20°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 Mangham, not a forecast for this year.
What to do before the first frost
Zone 8b around Mangham has about 11 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.
Why 03/07 isn't a guarantee
03/07 is the middle of 30 years of NOAA records, not a promise. Plant by 02/17 and you're betting against frost in roughly 9 years out of 10. 03/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mangham compares
Mangham's growing season runs about 252 days, ranking 7,249 of 40,283 US ZIP codes measured here, longest to shortest. Within LA, it ranks 589 of 710.
Learn more
local microclimates explains what one yard in Mangham can differ from the 71259 normal, and zone vs. frost date explains why Zone 8b and Mangham's frost date answer different questions.