When to plant in Chandler, AZ
USDA Zone 9bChandler, Arizona frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
A generous ~295-day season lets Chandler gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. Chandler's nearest full-normals station sits about 17 km out, so treat these as a close estimate — local microclimate can nudge your first and last frost. Zone 9b is warm enough that Chandler can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average last spring frost in Chandler is now 9 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
TEMPE ASU · 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 Chandler’s own odds, recorded at TEMPE ASU.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 7 | Mar 8 | Feb 14 | Nov 7 | Nov 26 | Dec 9 |
| 32°F | Mar 9 | Feb 13 | Jan 12 | Nov 18 | Dec 5 | Dec 24 |
| 28°F | Feb 19 | Jan 16 | Dec 19 | Nov 27 | Dec 19 | Jan 19 |
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 Chandler, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 21 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.
Chandler planting FAQ
When is the last spring frost in Chandler, AZ?
On average, the last spring frost in Chandler is around February 13 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Chandler, AZ?
The first fall frost in Chandler typically arrives around December 5 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Chandler in?
Chandler is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Chandler?
There are roughly 295 frost-free days in Chandler (a long growing season), running from the average last frost around February 13 to the first fall frost near December 5.
When should I plant tomatoes in Chandler?
In Chandler, start tomato seeds indoors around December 19–January 2, then transplant seedlings outdoors around February 20 once the danger of frost has passed.
Never miss a window in Chandler
An email when it’s time to start seeds, transplant, and sow — timed to Chandler’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Sun Lakes · 8 km
- Gilbert · 11 km
- Tempe · 14 km
- Mesa · 18 km
- Queen Creek · 23 km
- San Tan Valley · 29 km
- Maricopa · 30 km
- Apache Junction · 31 km
Frost dates recorded at TEMPE ASU, 17 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 Chandler, AZ — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00028499. Retrieved from https://blissgarden.com/arizona/chandler.