Frost dates for Glendale, Arizona
In a typical year, Glendale’s last spring frost lands around Jan 20 and the first fall frost around Dec 15, a growing season of about 329 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 9b.
Right now the growing season is open, with about 51 days until the typical first fall frost.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Dec 23 | Nov 28 |
| 50 percent | Jan 20 | Dec 15 |
| 90 percent | Feb 18 | Jan 7 |
A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.
Soil in Glendale is typically around 71°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Glendale
- Dill (Bouquet)
- Cauliflower (Snow Crown)
- Arugula (Astro)
- Broccoli (Green Magic)
- Mustard greens (Red Giant)
- Cabbage (Red Acre)
- Cilantro (Santo)
- Sweet alyssum (Snow Crystals)
Timing comes from the same temperature engine the app uses, run against Glendale’s normals for today.
Common questions
When is the last frost in Glendale, Arizona?
Glendale’s last spring frost falls around January 20 in a typical year. One year in ten it is done by December 23, and one year in ten frost holds on until February 18. Frost-sensitive planting usually waits for the late side of that band.
When is the first fall frost in Glendale?
The first fall frost arrives around December 15 in a typical year, as early as November 28 in an early year and as late as January 7 in a late one.
How long is the growing season in Glendale?
About 329 days, counted between the typical last spring frost and the typical first fall frost.
What USDA zone is Glendale in?
Glendale is in USDA hardiness zone 9b under the 2023 USDA Plant Hardiness Zone Map.
Dates come from 30-year NOAA climate normals for the nearest reporting station. They describe odds, not a forecast.
Nearby cities
- Peoria, AZ (around Jan 20 to Dec 15)
- Phoenix, AZ (around Jan 21 to Dec 16)
- Surprise, AZ (around Jan 20 to Dec 15)
- Scottsdale, AZ (around Feb 13 to Dec 5)
- Tempe, AZ (around Feb 13 to Dec 5)
Row & Bed is a plant reference built around your garden: your zone, your frost dates, your forecast, and a cited page for every variety in your beds.
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