Port Hueneme, CA 91359 Frost Dates
Frost dates for Port Hueneme, CA, ZIP 91359
Around 12/29 is the usual last spring frost, about 123 days away. The first fall frost typically arrives around 12/24, about 365 frost-free days later.
Port Hueneme sits in USDA Zone 10a (30 to 35°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 10a around Port Hueneme has about 17 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
12/29 is the middle of 30 years of NOAA records, not a promise. Plant by 01/15 and you're betting against frost in roughly 9 years out of 10. 12/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Port Hueneme compares
Port Hueneme's growing season runs about 365 days, ranking 1,207 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 525 of 2,555.
Learn more
the frost range explains how to read the range around Port Hueneme's dates instead of trusting one, and local microclimates explains what one yard in Port Hueneme can differ from the 91359 normal.