When to plant in Brawley, CA
USDA Zone 9bEverything below — frost dates, hardiness zone, and what to plant when in Brawley, California — is derived from the closest NOAA station with complete climate normals.
Brawley enjoys a long ~337-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. Zone 9b is warm enough that Brawley can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average last spring frost in Brawley is now 7 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
BRAWLEY 2 SW · 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 Brawley’s own odds, recorded at BRAWLEY 2 SW.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Feb 28 | Feb 10 | Jan 13 | Nov 22 | Dec 6 | Dec 21 |
| 32°F | Feb 17 | Jan 16 | Dec 21 | Dec 2 | Dec 19 | Jan 17 |
| 28°F | Feb 2 | Jan 2 | Dec 12 | Dec 10 | Dec 29 | Jan 27 |
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 Brawley, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 17 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.
Brawley planting FAQ
When is the last spring frost in Brawley, CA?
Plan for the last spring frost in Brawley around January 16 (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 Brawley, CA?
Expect Brawley's first fall frost near December 19 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Brawley in?
Brawley is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Brawley?
There are roughly 337 frost-free days in Brawley (a long growing season), running from the average last frost around January 16 to the first fall frost near December 19.
When should I plant tomatoes in Brawley?
In Brawley, start tomato seeds indoors around November 21–December 5, then transplant seedlings outdoors around January 23 once the danger of frost has passed.
Never miss a window in Brawley
An email when it’s time to start seeds, transplant, and sow — timed to Brawley’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at BRAWLEY 2 SW, 4 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 Brawley, CA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00041048. Retrieved from https://blissgarden.com/california/brawley.