When to plant in San Juan Capistrano, CA
USDA Zone 10bSan Juan Capistrano, California frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
With only about -4 frost-free days, San Juan Capistrano 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 San Juan Capistrano — most perennials thrive, and annual vegetables can go out early and stay late.
Frost probability
LAGUNA BEACH · 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 San Juan Capistrano’s own odds, recorded at LAGUNA BEACH.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Feb 28 | Jan 30 | Dec 26 | Dec 1 | Dec 26 | Feb 2 |
| 32°F | Feb 11 | Jan 6 | Dec 13 | Dec 12 | Jan 2 | Feb 8 |
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 San Juan Capistrano, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 35 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.
San Juan Capistrano planting FAQ
When is the last spring frost in San Juan Capistrano, CA?
On average, the last spring frost in San Juan Capistrano is around January 6 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in San Juan Capistrano, CA?
Expect San Juan Capistrano's first fall frost near January 2 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is San Juan Capistrano in?
San Juan Capistrano is in USDA hardiness zone 10b. In zone 10b, winters are mild — many tender perennials overwinter here.
How long is the growing season in San Juan Capistrano?
San Juan Capistrano has about -4 frost-free days — a short growing season — between the average last spring frost (January 6) and first fall frost (January 2).
When should I plant tomatoes in San Juan Capistrano?
For San Juan Capistrano, sow tomatoes indoors about November 11–November 25 and move the seedlings out around January 13, after the last spring frost.
Never miss a window in San Juan Capistrano
An email when it’s time to start seeds, transplant, and sow — timed to San Juan Capistrano’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Dana Point · 5 km
- Laguna Niguel · 5 km
- Ladera Ranch · 5 km
- San Clemente · 7 km
- Rancho Mission Viejo · 9 km
- Laguna Hills · 11 km
- Laguna Beach · 11 km
- Aliso Viejo · 11 km
Frost dates recorded at LAGUNA BEACH, 13 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 San Juan Capistrano, CA — Frost Dates & Zone 10b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00044647. Retrieved from https://blissgarden.com/california/san-juan-capistrano.