When to plant in Bay Point, CA
USDA Zone 9bEverything below — frost dates, hardiness zone, and what to plant when in Bay Point, California — is derived from the closest NOAA station with complete climate normals.
Bay Point enjoys a long ~339-day frost-free season — you can succession-sow, fit in a second crop, and grow long-season heat-lovers with room to spare. In zone 9b, frost is a minor factor for Bay Point — most perennials thrive, and annual vegetables can go out early and stay late.
The average last spring frost in Bay Point is now 13 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
CONCORD BUCHANAN FLD · 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 Bay Point’s own odds, recorded at CONCORD BUCHANAN FLD.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 13 | Feb 14 | Jan 12 | Nov 14 | Dec 1 | Dec 26 |
| 32°F | Feb 12 | Jan 9 | Dec 16 | Nov 28 | Dec 14 | Jan 16 |
| 28°F | Jan 19 | Dec 30 | Dec 10 | Dec 5 | Dec 23 | Jan 12 |
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 Bay Point, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 13 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.
Bay Point planting FAQ
When is the last spring frost in Bay Point, CA?
Plan for the last spring frost in Bay Point around January 9 (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 Bay Point, CA?
In Bay Point, the first 32°F freeze of fall lands around December 14 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Bay Point in?
Bay Point is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Bay Point?
Bay Point has about 339 frost-free days — a long growing season — between the average last spring frost (January 9) and first fall frost (December 14).
When should I plant tomatoes in Bay Point?
For Bay Point, sow tomatoes indoors about November 14–November 28 and move the seedlings out around January 16, after the last spring frost.
Never miss a window in Bay Point
An email when it’s time to start seeds, transplant, and sow — timed to Bay Point’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Pittsburg · 6 km
- Concord · 8 km
- Clayton · 11 km
- Pleasant Hill · 13 km
- Martinez · 14 km
- Antioch · 16 km
- Walnut Creek · 16 km
- Benicia · 17 km
Frost dates recorded at CONCORD BUCHANAN FLD, 9 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 Bay Point, CA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00023254. Retrieved from https://blissgarden.com/california/bay-point.