When to plant in Paramount, CA
USDA Zone 10bParamount, 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, Paramount has a short season — start heat-lovers indoors early, favor quick-maturing varieties, and use row cover to stretch both ends. Heads up: the nearest complete-normals station is about 19 km from Paramount, so your yard's frost dates can differ — a low spot or a paved city center can shift them by a week. Zone 10b is warm enough that Paramount can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
TORRANCE AP · 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 Paramount’s own odds, recorded at TORRANCE AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 5 | Jan 17 | Dec 12 | Dec 1 | Dec 31 | Feb 20 |
| 32°F | Feb 24 | Jan 9 | Dec 4 | Dec 3 | Jan 5 | Feb 22 |
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 Paramount, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 28 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.
Paramount planting FAQ
When is the last spring frost in Paramount, CA?
Paramount's average last spring frost falls near January 9 — 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 Paramount, CA?
Expect Paramount's first fall frost near January 5 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Paramount in?
Paramount is in USDA hardiness zone 10b. In zone 10b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Paramount?
There are roughly -4 frost-free days in Paramount (a short growing season), running from the average last frost around January 9 to the first fall frost near January 5.
When should I plant tomatoes in Paramount?
In Paramount, start tomato seeds indoors around November 14–November 28, then transplant seedlings outdoors around January 16 once the danger of frost has passed.
Never miss a window in Paramount
An email when it’s time to start seeds, transplant, and sow — timed to Paramount’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- East Rancho Dominguez · 3 km
- Bellflower · 4 km
- Lynwood · 4 km
- Downey · 5 km
- South Gate · 6 km
- Compton · 6 km
- Willowbrook · 7 km
- Lakewood · 7 km
Frost dates recorded at TORRANCE AP, 19 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 Paramount, CA — Frost Dates & Zone 10b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00003122. Retrieved from https://blissgarden.com/california/paramount.