Temple City, CA 91780 Frost Dates
Frost dates for Temple City, CA, ZIP 91780
Around 01/04 is the usual last spring frost, about 129 days away. The first fall frost typically arrives around 01/02, about 365 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 Temple City, not a forecast for this year.
What to do before the first frost
Zone 10a around Temple City 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 01/04 isn't a guarantee
01/04 is the middle of 30 years of NOAA records, not a promise. Plant by 01/28 and you're betting against frost in roughly 9 years out of 10. 12/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Temple City compares
About 365 days separate Temple City's last and first frost, putting it 1,006 of 40,283 ZIP codes nationally. Within CA, it ranks 426 of 2,555.
Learn more
local microclimates explains what one yard in Temple City can differ from the 91780 normal, and zone vs. frost date explains why Zone 10a and Temple City's frost date answer different questions.