Port Hueneme, CA 93042 Frost Dates
93042, near Port Hueneme, CA: the frost window
The last spring frost here typically falls around 12/29, about 123 days from today. Fall's first freeze usually shows up around 12/24, roughly 365 days after the last spring frost.
Port Hueneme sits in USDA Zone 10b (35 to 40°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
Port Hueneme'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.
Why 12/29 isn't a guarantee
12/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/09 and only about 1 year in 10 sees frost after that.
Port Hueneme against the rest of the dataset
At roughly 365 frost-free days, Port Hueneme places 1,222 of 40,283 ZIP codes in this dataset. Within CA, it ranks 540 of 2,555.
Learn more
Two guides worth reading on 93042: the frost range, on how to read the range around Port Hueneme's dates instead of trusting one, and local microclimates, on what one yard in Port Hueneme can differ from the 93042 normal.