When to plant in Port Hueneme, CA
USDA Zone 10bEverything below — frost dates, hardiness zone, and what to plant when in Port Hueneme, California — is derived from the closest NOAA station with complete climate normals.
With only about -5 frost-free days, Port Hueneme has a short season — start heat-lovers indoors early, favor quick-maturing varieties, and use row cover to stretch both ends. In zone 10b, frost is a minor factor for Port Hueneme — most perennials thrive, and annual vegetables can go out early and stay late.
The average last spring frost in Port Hueneme is now 8 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
POINT MUGU NF · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Port Hueneme’s own odds, recorded at POINT MUGU NF.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 5 | Jan 28 | Dec 19 | Nov 25 | Dec 17 | Jan 27 |
| 32°F | Jan 15 | Dec 29 | Dec 9 | Dec 6 | Dec 24 | Jan 11 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Port Hueneme, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 32 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Port Hueneme planting FAQ
When is the last spring frost in Port Hueneme, CA?
Port Hueneme's average last spring frost falls near December 29 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Port Hueneme, CA?
In Port Hueneme, the first 32°F freeze of fall lands around December 24 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Port Hueneme in?
Port Hueneme is in USDA hardiness zone 10b. In zone 10b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Port Hueneme?
Port Hueneme has about -5 frost-free days — a short growing season — between the average last spring frost (December 29) and first fall frost (December 24).
When should I plant tomatoes in Port Hueneme?
For Port Hueneme, sow tomatoes indoors about November 3–November 17 and move the seedlings out around January 5, after the last spring frost.
Never miss a window in Port Hueneme
An email when it’s time to start seeds, transplant, and sow — timed to Port Hueneme’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Oxnard · 4 km
- San Buenaventura (Ventura) · 13 km
- Camarillo · 17 km
- Santa Paula · 25 km
- Thousand Oaks · 31 km
- Moorpark · 33 km
- Carpinteria · 37 km
- Fillmore · 37 km
Frost dates recorded at POINT MUGU NF, 10 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Port Hueneme, CA — Frost Dates & Zone 10b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00093111. Retrieved from https://blissgarden.com/california/port-hueneme.