Sulphur, LA 70616 Frost Dates
When can you plant in Sulphur, LA?
The last spring frost here typically falls around 03/02, about 186 days from today. The first fall frost typically arrives around 11/25, about 267 frost-free days later.
The USDA Plant Hardiness Zone Map puts Sulphur 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 Sulphur before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/02 isn't a guarantee
03/02 is the middle of 30 years of NOAA records, not a promise. Plant by 01/30 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 Sulphur compares
At roughly 267 frost-free days, Sulphur places 5,835 of 40,283 ZIP codes in this dataset. Within LA, it ranks 429 of 710.
Learn more
local microclimates covers what one yard in Sulphur can differ from the 70616 normal. zone vs. frost date covers why Zone 9a and Sulphur's frost date answer different questions.