When to plant in Dinuba, CA
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Dinuba, California — all computed from Dinuba's nearest NOAA weather station.
With about 324 frost-free days, Dinuba supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. These dates come from a station roughly 26 km away, the closest with full normals; terrain around Dinuba (elevation, water, pavement) can move your real frost dates a few days either way. In zone 9b, frost is a minor factor for Dinuba — most perennials thrive, and annual vegetables can go out early and stay late.
Frost probability
VISALIA · 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 Dinuba’s own odds, recorded at VISALIA.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 2 | Feb 27 | Jan 26 | Nov 15 | Nov 29 | Dec 16 |
| 32°F | Feb 27 | Jan 23 | Dec 29 | Nov 27 | Dec 13 | Jan 8 |
| 28°F | Jan 24 | Jan 2 | Dec 16 | Dec 9 | Dec 25 | 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 Dinuba, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 33 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.
Dinuba planting FAQ
When is the last spring frost in Dinuba, CA?
Dinuba's average last spring frost falls near January 23 — 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 Dinuba, CA?
The first fall frost in Dinuba typically arrives around December 13 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Dinuba in?
Dinuba is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Dinuba?
Dinuba has about 324 frost-free days — a long growing season — between the average last spring frost (January 23) and first fall frost (December 13).
When should I plant tomatoes in Dinuba?
For Dinuba, sow tomatoes indoors about November 28–December 12 and move the seedlings out around January 30, after the last spring frost.
Never miss a window in Dinuba
An email when it’s time to start seeds, transplant, and sow — timed to Dinuba’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at VISALIA, 26 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 Dinuba, CA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00049367. Retrieved from https://blissgarden.com/california/dinuba.