Berwick, LA 70342 Frost Dates
Frost dates for Berwick, LA, ZIP 70342
Typically, the last spring freeze lands around 01/30, roughly 155 days out. The first fall frost typically arrives around 01/01, about 335 frost-free days later.
The USDA Plant Hardiness Zone Map puts Berwick in Zone 9b (25 to 30°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
Zone 9b around Berwick has about 18 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 01/30 isn't a guarantee
01/30 is the middle of 30 years of NOAA records, not a promise. Plant by 03/05 and you're betting against frost in roughly 9 years out of 10. 12/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Berwick compares
Berwick's growing season runs about 335 days, ranking 2,750 of 40,283 US ZIP codes measured here, longest to shortest. Within LA, it ranks 25 of 710.
Learn more
the frost range explains how to read the range around Berwick's dates instead of trusting one, and local microclimates explains what one yard in Berwick can differ from the 70342 normal.