Perris, CA 92567 Frost Dates
Frost dates for Perris, CA, ZIP 92567
The last spring frost here typically falls around 01/31, about 156 days from today. The first fall frost typically arrives around 12/10, about 315 frost-free days later.
Perris sits in USDA Zone 9b (25 to 30°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.
What to do before the first frost
Zone 9b around Perris has about 15 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
01/31 is the middle of 30 years of NOAA records, not a promise. Plant by 02/28 and you're betting against frost in roughly 9 years out of 10. 12/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Perris compares
At roughly 315 frost-free days, Perris places 3,411 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,421 of 2,555.
Learn more
zone vs. frost date explains why Zone 9b and Perris's frost date answer different questions, and the frost range explains how to read the range around Perris's dates instead of trusting one.