When to plant in Shafter, CA
USDA Zone 9aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Shafter, California — all computed from Shafter's nearest NOAA weather station.
A generous ~276-day season lets Shafter gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. Zone 9a is warm enough that Shafter can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
SHAFTER 6E · 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 Shafter’s own odds, recorded at SHAFTER 6E.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 12 | Mar 20 | Feb 22 | Oct 20 | Nov 7 | Nov 22 |
| 32°F | Mar 9 | Feb 20 | Jan 17 | Nov 5 | Nov 23 | Dec 9 |
| 28°F | Feb 22 | Jan 22 | Dec 22 | Nov 21 | Dec 6 | Jan 5 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Shafter, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 15 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.
Shafter planting FAQ
When is the last spring frost in Shafter, CA?
Shafter's average last spring frost falls near February 20 — 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 Shafter, CA?
Expect Shafter's first fall frost near November 23 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Shafter in?
Shafter is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Shafter?
There are roughly 276 frost-free days in Shafter (a long growing season), running from the average last frost around February 20 to the first fall frost near November 23.
When should I plant tomatoes in Shafter?
In Shafter, start tomato seeds indoors around December 26–January 9, then transplant seedlings outdoors around February 27 once the danger of frost has passed.
Never miss a window in Shafter
An email when it’s time to start seeds, transplant, and sow — timed to Shafter’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Rosedale · 10 km
- Oildale · 16 km
- Wasco · 20 km
- Bakersfield · 20 km
- McFarland · 21 km
- East Bakersfield · 23 km
- Hillcrest · 25 km
- Potomac Park · 25 km
Frost dates recorded at SHAFTER 6E, 5 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 Shafter, CA — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00048122. Retrieved from https://blissgarden.com/california/shafter.