Pismo Beach, CA 93424 Frost Dates
Frost dates for Pismo Beach, CA, ZIP 93424
The last spring frost here typically falls around 02/01, about 157 days from today. The first fall frost typically arrives around 01/04, about 362 frost-free days later.
Pismo Beach sits in USDA Zone 10a (30 to 35°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 10a around Pismo Beach 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.
The actual range around Pismo Beach's last frost
02/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/13 and you're betting against frost in roughly 9 years out of 10. 12/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Pismo Beach compares
About 362 days separate Pismo Beach's last and first frost, putting it 2,077 of 40,283 ZIP codes nationally. Within CA, it ranks 959 of 2,555.
Learn more
zone vs. frost date explains why Zone 10a and Pismo Beach's frost date answer different questions, and the frost range explains how to read the range around Pismo Beach's dates instead of trusting one.