Sulphur, LA 70645 Frost Dates
When can you plant in Sulphur, LA?
The last spring frost here typically falls around 02/03, about 159 days from today. The first fall frost typically arrives around 12/24, about 323 frost-free days later.
Sulphur sits in USDA Zone 9b (25 to 30°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
About 17 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.
The actual range around Sulphur's last frost
02/03 is the middle of 30 years of NOAA records, not a promise. Plant by 01/06 and you're betting against frost in roughly 9 years out of 10. 03/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sulphur compares
Sulphur's growing season runs about 323 days, ranking 3,258 of 40,283 US ZIP codes measured here, longest to shortest. Within LA, it ranks 56 of 710.
Learn more
the frost range covers how to read the range around Sulphur's dates instead of trusting one. local microclimates covers what one yard in Sulphur can differ from the 70645 normal.