When to plant in San Fernando, CA
USDA Zone 10aSan Fernando, California frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
San Fernando's growing season is short at roughly -1 days, so succession planting is limited; lean on transplants over direct sowing for anything slow to mature. Zone 10a is warm enough that San Fernando can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
NORTHRIDGE CAL STATE · 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 Fernando’s own odds, recorded at NORTHRIDGE CAL STATE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 1 | Jan 22 | Dec 16 | Nov 30 | Dec 25 | Feb 4 |
| 32°F | Jan 27 | Jan 2 | Dec 10 | Dec 9 | Jan 1 | Jan 25 |
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 Fernando, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 12 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 Fernando planting FAQ
When is the last spring frost in San Fernando, CA?
Plan for the last spring frost in San Fernando around January 2 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in San Fernando, CA?
Expect San Fernando's first fall frost near January 1 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is San Fernando in?
San Fernando is in USDA hardiness zone 10a. In zone 10a, winters are mild — many tender perennials overwinter here.
How long is the growing season in San Fernando?
There are roughly -1 frost-free days in San Fernando (a short growing season), running from the average last frost around January 2 to the first fall frost near January 1.
When should I plant tomatoes in San Fernando?
In San Fernando, start tomato seeds indoors around November 7–November 21, then transplant seedlings outdoors around January 9 once the danger of frost has passed.
Never miss a window in San Fernando
An email when it’s time to start seeds, transplant, and sow — timed to San Fernando’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Burbank · 15 km
- Santa Clarita · 15 km
- Stevenson Ranch · 18 km
- La Crescenta-Montrose · 19 km
- Glendale · 21 km
- West Hollywood · 23 km
- La Cañada Flintridge · 23 km
- Beverly Hills · 23 km
Frost dates recorded at NORTHRIDGE CAL STATE, 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 San Fernando, CA — Frost Dates & Zone 10a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00046263. Retrieved from https://blissgarden.com/california/san-fernando.