Slidell, LA 70445 Frost Dates
When can you plant in Slidell, LA?
The last spring frost here typically falls around 03/03, about 187 days from today. The first fall frost typically arrives around 11/21, about 263 frost-free days later.
The USDA Plant Hardiness Zone Map puts Slidell 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 12 weeks of growing season left in Slidell before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/03 isn't a guarantee
03/03 is the middle of 30 years of NOAA records, not a promise. Plant by 02/04 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 Slidell compares
Slidell's growing season runs about 263 days, ranking 6,098 of 40,283 US ZIP codes measured here, longest to shortest. Within LA, it ranks 472 of 710.
Learn more
the frost range covers how to read the range around Slidell's dates instead of trusting one. local microclimates covers what one yard in Slidell can differ from the 70445 normal.