Twentynine Palms, CA 91729 Frost Dates
Twentynine Palms, CA: when does the frost end?
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.
The USDA Plant Hardiness Zone Map puts Twentynine Palms in Zone 10a (30 to 35°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
With roughly 15 weeks until Twentynine Palms's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Twentynine Palms's last frost
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 5,333 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,838 of 2,555.
Learn more
Before leaning on 91729's figures: the frost range explains how to read the range around Twentynine Palms's dates instead of trusting one, while local microclimates explains what one yard in Twentynine Palms can differ from the 91729 normal.