Ridgecrest, CA 93515 Frost Dates
93515, near Ridgecrest, CA: the frost window
Around 01/04 is the usual last spring frost, about 129 days away. Fall's first freeze usually shows up around 12/22, roughly 352 days after the last spring frost.
Ridgecrest sits in USDA Zone 8a (10 to 15°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
Ridgecrest's growing season runs out in roughly 17 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Ridgecrest's last frost
01/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/16 and only about 1 year in 10 sees frost after that.
Ridgecrest against the rest of the dataset
About 352 days separate Ridgecrest's last and first frost, putting it 2,277 of 40,283 ZIP codes nationally. Within CA, it ranks 1,008 of 2,555.
Learn more
Two guides worth reading on 93515: zone vs. frost date, on why Zone 8a and Ridgecrest's frost date answer different questions, and the frost range, on how to read the range around Ridgecrest's dates instead of trusting one.