Sulphur, LA 70606 Frost Dates
Sulphur, LA: when does the frost end?
Around 03/02 is the usual last spring frost, about 186 days away. Fall's first freeze usually shows up around 11/25, roughly 267 days after the last spring frost.
Zone 9b (25 to 30°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 Sulphur, not a forecast for this year.
Stretching the season past the first frost
With roughly 13 weeks until Sulphur's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
03/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/26 and only about 1 year in 10 sees frost after that.
Sulphur against the rest of the dataset
About 267 days separate Sulphur's last and first frost, putting it 5,833 of 40,283 ZIP codes nationally. Within LA, it ranks 427 of 710.
Learn more
Before leaning on 70606's figures: the frost range explains how to read the range around Sulphur's dates instead of trusting one, while local microclimates explains what one yard in Sulphur can differ from the 70606 normal.