Monterey Park, CA 91754 Frost Dates
Frost dates for Monterey Park, CA, ZIP 91754
Typically, the last spring freeze lands around 01/04, roughly 129 days out. The first fall frost typically arrives around 01/02, about 365 frost-free days later.
Zone 10b (35 to 40°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 Monterey Park, not a forecast for this year.
What to do before the first frost
Zone 10b around Monterey Park 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 Monterey Park's last frost
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 Monterey Park compares
At roughly 365 frost-free days, Monterey Park places 799 of 40,283 ZIP codes in this dataset. Within CA, it ranks 341 of 2,555.
Learn more
the frost range explains how to read the range around Monterey Park's dates instead of trusting one, and local microclimates explains what one yard in Monterey Park can differ from the 91754 normal.