Calexico, CA 92249 Frost Dates
When can you plant in Calexico, CA?
The last spring frost here typically falls around 01/03, about 128 days from today. The first fall frost typically arrives around 12/27, about 363 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 Calexico, not a forecast for this year.
What to do before the first frost
About 17 weeks of growing season left in Calexico before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 01/03 isn't a guarantee
01/03 is the middle of 30 years of NOAA records, not a promise. Plant by 02/04 and you're betting against frost in roughly 9 years out of 10. 12/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Calexico compares
At roughly 363 frost-free days, Calexico places 2,044 of 40,283 ZIP codes in this dataset. Within CA, it ranks 932 of 2,555.
Learn more
zone vs. frost date covers why Zone 10a and Calexico's frost date answer different questions. the frost range covers how to read the range around Calexico's dates instead of trusting one.