Arroyo Grande, CA 93453 Frost Dates
When can you plant in Arroyo Grande, CA?
Typically, the last spring freeze lands around 02/04, roughly 160 days out. The first fall frost typically arrives around 12/04, about 301 frost-free days later.
The USDA Plant Hardiness Zone Map puts Arroyo Grande in Zone 8b (15 to 20°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 14 weeks of growing season left in Arroyo Grande before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
02/04 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 12/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Arroyo Grande compares
About 301 days separate Arroyo Grande's last and first frost, putting it 3,955 of 40,283 ZIP codes nationally. Within CA, it ranks 1,635 of 2,555.
Learn more
the frost range covers how to read the range around Arroyo Grande's dates instead of trusting one. local microclimates covers what one yard in Arroyo Grande can differ from the 93453 normal.