Murrieta, CA 92563 Frost Dates
Frost dates for Murrieta, CA, ZIP 92563
The last spring frost here typically falls around 02/02, about 158 days from today. The first fall frost typically arrives around 01/30, about 365 frost-free days later.
Murrieta 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 Murrieta has about 22 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
02/02 is the middle of 30 years of NOAA records, not a promise. Plant by 02/24 and you're betting against frost in roughly 9 years out of 10. 12/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Murrieta compares
About 365 days separate Murrieta's last and first frost, putting it 457 of 40,283 ZIP codes nationally. Within CA, it ranks 182 of 2,555.
Learn more
local microclimates explains what one yard in Murrieta can differ from the 92563 normal, and zone vs. frost date explains why Zone 9b and Murrieta's frost date answer different questions.