Frost Dates for Peoria, AZ
In Peoria, AZ, the average last spring frost is around Feb 5 and the average first fall frost around Dec 11, for a growing season of about 306 days. For frost-tender plants, wait until Mar 3, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Wittmann 1Se, AZ weather station, 12 miles away, elevation 1,683 ft. Frost can come earlier in low spots and valleys and later near cities and large lakes.
Frost probability by date
Chance of a 32°F frost after the spring date, or before the fall date.
| Chance | Last spring frost | First fall frost |
|---|---|---|
| 10% | Mar 3 | Nov 20 |
| 20% | Feb 24 | Nov 26 |
| 30% | Feb 16 | Dec 2 |
| 40% | Feb 11 | Dec 7 |
| 50% | Feb 5 | Dec 11 |
| 60% | Jan 31 | Dec 15 |
| 70% | Jan 24 | Dec 19 |
| 80% | Jan 16 | Dec 25 |
| 90% | Jan 6 | Jan 2 |
Light frost vs. hard freeze
Average (50%) dates for each temperature. Tender plants are damaged at 36°F; most hardy crops survive until 28°F.
| Temperature | Last in spring | First in fall |
|---|---|---|
| Light frost (36°F) | Mar 4 | Nov 26 |
| Frost / freeze (32°F) | Feb 5 | Dec 11 |
| Hard freeze (28°F) | Jan 15 | Dec 27 |
Planting calendar for Peoria
Transplant Feb 12 – Feb 26
Transplant Feb 19 – Mar 5
Transplant Feb 19 – Mar 5
Transplant Feb 12 – Feb 26
Sow or transplant Feb 12 – Feb 26
Sow or transplant Feb 12 – Feb 26
Sow or transplant Feb 19 – Mar 5
Sow or transplant Jan 8 – Jan 22
Fall sowing Oct 16 – Nov 13
Fall sowing Oct 16 – Nov 6
Fall sowing Oct 2 – Oct 16
Sow or transplant Jan 8 – Jan 22
Fall sowing Oct 2 – Oct 30
Transplant Jan 22 – Feb 5
Fall sowing Sep 18 – Oct 2
Transplant Jan 15 – Jan 29
Fall sowing Sep 18 – Oct 2
Fall sowing Sep 18 – Oct 2
Fall sowing Oct 30 – Nov 20
Fall sowing Oct 2 – Oct 16
Plant Jan 8 – Jan 22
Based on the average last frost (Feb 5) and first frost (Dec 11). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.