Yucca Valley, CA 92252 Frost Dates
92252, near Yucca Valley, CA: the frost window
Typically, the last spring freeze lands around 02/28, roughly 184 days out. Fall's first freeze usually shows up around 12/01, roughly 273 days after the last spring frost.
Yucca Valley sits in USDA Zone 9a (20 to 25°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Yucca Valley's growing season runs out in roughly 14 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 02/28 isn't a guarantee
02/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/28 and only about 1 year in 10 sees frost after that.
Yucca Valley against the rest of the dataset
About 273 days separate Yucca Valley's last and first frost, putting it 5,193 of 40,283 ZIP codes nationally. Within CA, it ranks 1,832 of 2,555.
Learn more
Two guides worth reading on 92252: local microclimates, on what one yard in Yucca Valley can differ from the 92252 normal, and zone vs. frost date, on why Zone 9a and Yucca Valley's frost date answer different questions.