Montebello, CA 90640 Frost Dates
When can you plant in Montebello, CA?
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.
The USDA Plant Hardiness Zone Map puts Montebello in Zone 10b (35 to 40°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 18 weeks of growing season left in Montebello before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Montebello'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 Montebello compares
At roughly 365 frost-free days, Montebello places 769 of 40,283 ZIP codes in this dataset. Within CA, it ranks 327 of 2,555.
Learn more
zone vs. frost date covers why Zone 10b and Montebello's frost date answer different questions. the frost range covers how to read the range around Montebello's dates instead of trusting one.