When to plant in Goodyear, AZ
USDA Zone 9bEverything below — frost dates, hardiness zone, and what to plant when in Goodyear, Arizona — is derived from the closest NOAA station with complete climate normals.
With about 342 frost-free days, Goodyear supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. These dates come from a station roughly 22 km away, the closest with full normals; terrain around Goodyear (elevation, water, pavement) can move your real frost dates a few days either way. Zone 9b is warm enough that Goodyear can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
The average last spring frost in Goodyear is now 7 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
LAVEEN 3 SSE · 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 Goodyear’s own odds, recorded at LAVEEN 3 SSE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 1 | Feb 6 | Jan 8 | Nov 22 | Dec 8 | Dec 24 |
| 32°F | Feb 12 | Jan 14 | Dec 19 | Dec 1 | Dec 22 | Jan 22 |
| 28°F | Feb 3 | Jan 5 | Dec 13 | Dec 11 | Jan 2 | Jan 30 |
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 Goodyear, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 31 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.
Goodyear planting FAQ
When is the last spring frost in Goodyear, AZ?
Plan for the last spring frost in Goodyear around January 14 (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 Goodyear, AZ?
Expect Goodyear's first fall frost near December 22 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Goodyear in?
Goodyear is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Goodyear?
There are roughly 342 frost-free days in Goodyear (a long growing season), running from the average last frost around January 14 to the first fall frost near December 22.
When should I plant tomatoes in Goodyear?
In Goodyear, start tomato seeds indoors around November 19–December 3, then transplant seedlings outdoors around January 21 once the danger of frost has passed.
Never miss a window in Goodyear
An email when it’s time to start seeds, transplant, and sow — timed to Goodyear’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at LAVEEN 3 SSE, 22 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 Goodyear, AZ — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00024829. Retrieved from https://blissgarden.com/arizona/goodyear.