Twentynine Palms, CA 93592 Frost Dates
93592, near Twentynine Palms, CA: the frost window
The last spring frost here typically falls around 03/06, about 190 days from today. Fall's first freeze usually shows up around 12/08, roughly 272 days after the last spring frost.
Twentynine Palms 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
Twentynine Palms's growing season runs out in roughly 15 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
03/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/09 and only about 1 year in 10 sees frost after that.
Twentynine Palms against the rest of the dataset
At roughly 272 frost-free days, Twentynine Palms places 5,355 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,860 of 2,555.
Learn more
Two guides worth reading on 93592: the frost range, on how to read the range around Twentynine Palms's dates instead of trusting one, and local microclimates, on what one yard in Twentynine Palms can differ from the 93592 normal.