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Will it freeze in Tempe in the next 6 nights?
No overnight lows at or below 32°F are forecast in Tempe during the next 6 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 6 nights.
- Tonight 56°F Above 36°F · Partly Cloudy
- Fri, Nov 6 59°F Above 36°F · Mostly Clear
- Sat, Nov 7 59°F Above 36°F · Clear
- Sun, Nov 8 59°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
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 Tempe
The median first fall hard-freeze date (28°F) is December 19, from NOAA’s 1991–2020 Climate Normals at Tempe Asu. This is the 50% probability date, not a forecast for this year.
| 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 | Feb 14 · Mar 8 · Apr 7 | Nov 7 · Nov 26 · Dec 9 | 259 days |
| 32°F freeze | Jan 12 · Feb 13 · Mar 9 | Nov 18 · Dec 5 · Dec 24 | 298 days |
| 28°F hard freeze | Dec 19 · Jan 16 · Feb 19 | Nov 27 · Dec 19 · Jan 19 | 337 days |
Average high temperature by month
1991–2020 normals at Tempe Asu
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 Tempe, AZ come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Tempe Asu (station USC00028499, elevation 1,167 ft), 2.7 mi from Tempe. 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 Tempe
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Guadalupe, AZ | 2.5 mi | Feb 13 | Dec 5 |
| Chandler, AZ | 8.7 mi | Feb 13 | Dec 5 |
| Paradise Valley, AZ | 11 mi | Jan 6 | Dec 26 |
| Gilbert, AZ | 12 mi | Feb 1 | Dec 11 |
| Mesa, AZ | 12 mi | Feb 1 | Dec 10 |
| Phoenix, AZ | 16 mi | Jan 8 | Dec 25 |
| Glendale, AZ | 18 mi | Jan 20 | Dec 15 |
| Fountain Hills, AZ | 19 mi | Jan 6 | Dec 28 |
| Tolleson, AZ | 19 mi | Jan 7 | Dec 24 |
| Scottsdale, AZ | 21 mi | Jan 27 | Dec 21 |
Frequently asked questions
When is the last frost in Tempe?
On average, the last spring frost (32°F) in Tempe is around February 13. In about 1 year in 10 it comes after March 9, and in 9 years in 10 it comes after January 12.
When is the first frost in Tempe?
The first fall frost (32°F) usually arrives around December 5. There’s a 10% chance of a freeze by November 18 and a 90% chance by December 24.
Can it frost in Tempe 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 March 8.
What growing zone is Tempe?
Tempe is in USDA Plant Hardiness Zone 10a (average annual extreme minimum temperature 30 to 35°F), based on the 2023 USDA map for ZIP code 85282. See growing zones in Arizona.
More: all Arizona frost dates · Arizona growing zones · UV index today in Tempe · frost vs. freeze