Pleasanton, CA 94624 Frost Dates
Frost dates for Pleasanton, CA, ZIP 94624
The last spring frost here typically falls around 02/15, about 171 days from today. The first fall frost typically arrives around 12/02, about 292 frost-free days later.
Zone 10a (30 to 35°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Pleasanton, not a forecast for this year.
What to do before the first frost
Zone 10a around Pleasanton has about 14 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.
How much risk comes with planting early here
02/15 is the middle of 30 years of NOAA records, not a promise. Plant by 01/12 and you're betting against frost in roughly 9 years out of 10. 03/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Pleasanton compares
About 292 days separate Pleasanton's last and first frost, putting it 4,332 of 40,283 ZIP codes nationally. Within CA, it ranks 1,688 of 2,555.
Learn more
the frost range explains how to read the range around Pleasanton's dates instead of trusting one, and local microclimates explains what one yard in Pleasanton can differ from the 94624 normal.