Checking current alerts… View NWS forecast and alerts.
Will it freeze in Glendale in the next 7 nights?
No overnight lows at or below 32°F are forecast in Glendale during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 56°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 56°F Above 36°F · Partly Cloudy
- Fri, Nov 6 59°F Above 36°F · Mostly Clear
- Sat, Nov 7 58°F Above 36°F · Clear
- Sun, Nov 8 58°F Above 36°F · Mostly Clear
- Mon, Nov 9 59°F Above 36°F · Mostly Clear
- Tue, Nov 10 57°F Above 36°F · Mostly Clear
- Wed, Nov 11 57°F Above 36°F · Mostly Clear
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Glendale
Most years have no 28°F hard freeze at Youngtown, according to NOAA’s 1991–2020 Climate Normals. Check the short-term forecast above during cold snaps.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Jan 21 · Feb 14 · Mar 4 | Nov 17 · Dec 2 · Dec 18 | 291 days |
| 32°F freeze | Dec 23 · Jan 20 · Feb 18 | Nov 28 · Dec 15 · Jan 7 | 331 days |
| 28°F hard freeze | Dec 13 · Jan 3 · Feb 1 | Dec 10 · Dec 29 · Jan 22 | 365 days |
Average high temperature by month
1991–2020 normals at Youngtown
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Glendale, AZ come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Youngtown (station USC00029634, elevation 1,135 ft), 7.7 mi from Glendale. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Glendale
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Phoenix, AZ | 6.2 mi | Jan 8 | Dec 25 |
| Tolleson, AZ | 6.8 mi | Jan 7 | Dec 24 |
| Youngtown, AZ | 7.5 mi | Jan 20 | Dec 15 |
| El Mirage, AZ | 8.7 mi | Jan 20 | Dec 15 |
| Litchfield Park, AZ | 9.9 mi | Jan 7 | Dec 24 |
| Paradise Valley, AZ | 13 mi | Jan 6 | Dec 26 |
| Avondale, AZ | 17 mi | Jan 14 | Dec 22 |
| Guadalupe, AZ | 17 mi | Feb 13 | Dec 5 |
| Surprise, AZ | 18 mi | Feb 5 | Dec 11 |
| Tempe, AZ | 18 mi | Feb 13 | Dec 5 |
Frequently asked questions
When is the last frost in Glendale?
On average, the last spring frost (32°F) in Glendale is around January 20. In about 1 year in 10 it comes after February 18, and in 9 years in 10 it comes after December 23.
When is the first frost in Glendale?
The first fall frost (32°F) usually arrives around December 15. There’s a 10% chance of a freeze by November 28 and a 90% chance by January 7.
Can it frost in Glendale after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after February 14.
What growing zone is Glendale?
Glendale is in USDA Plant Hardiness Zone 9b (average annual extreme minimum temperature 25 to 30°F), based on the 2023 USDA map for ZIP code 85301. See growing zones in Arizona.
More: all Arizona frost dates · Arizona growing zones · UV index today in Glendale · frost vs. freeze