Temecula, CA 92591 Frost Dates
When can you plant in Temecula, CA?
Typically, the last spring freeze lands around 02/02, roughly 158 days out. The first fall frost typically arrives around 01/30, about 365 frost-free days later.
The USDA Plant Hardiness Zone Map puts Temecula in Zone 9b (25 to 30°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 22 weeks of growing season left in Temecula before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
02/02 is the middle of 30 years of NOAA records, not a promise. Plant by 02/24 and you're betting against frost in roughly 9 years out of 10. 12/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Temecula compares
About 365 days separate Temecula's last and first frost, putting it 461 of 40,283 ZIP codes nationally. Within CA, it ranks 186 of 2,555.
Learn more
the frost range covers how to read the range around Temecula's dates instead of trusting one. local microclimates covers what one yard in Temecula can differ from the 92591 normal.