Berwick, LA 70340 Frost Dates
When can you plant in Berwick, LA?
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
About 18 weeks of growing season left in Berwick before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
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
At roughly 335 frost-free days, Berwick places 2,749 of 40,283 ZIP codes in this dataset. Within LA, it ranks 24 of 710.
Learn more
local microclimates covers what one yard in Berwick can differ from the 70340 normal. zone vs. frost date covers why Zone 9b and Berwick's frost date answer different questions.