Temecula, CA 92592 Frost Dates
92592, near Temecula, CA: the frost window
Around 02/02 is the usual last spring frost, about 158 days away. Fall's first freeze usually shows up around 01/30, roughly 365 days after the last spring frost.
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.
Stretching the season past the first frost
Temecula's growing season runs out in roughly 22 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 02/02 isn't a guarantee
02/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/26 and only about 1 year in 10 sees frost after that.
Temecula against the rest of the dataset
Temecula's growing season runs about 365 days, ranking 462 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 187 of 2,555.
Learn more
Two guides worth reading on 92592: local microclimates, on what one yard in Temecula can differ from the 92592 normal, and zone vs. frost date, on why Zone 9b and Temecula's frost date answer different questions.