Twentynine Palms, CA 92413 Frost Dates
When can you plant in Twentynine Palms, CA?
The last spring frost here typically falls around 03/06, about 190 days from today. The first fall frost typically arrives around 12/08, about 272 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 Twentynine Palms, not a forecast for this year.
What to do before the first frost
About 15 weeks of growing season left in Twentynine Palms before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/06 isn't a guarantee
03/06 is the middle of 30 years of NOAA records, not a promise. Plant by 01/17 and you're betting against frost in roughly 9 years out of 10. 04/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Twentynine Palms compares
At roughly 272 frost-free days, Twentynine Palms places 5,351 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,856 of 2,555.
Learn more
local microclimates covers what one yard in Twentynine Palms can differ from the 92413 normal. zone vs. frost date covers why Zone 10a and Twentynine Palms's frost date answer different questions.