Frost Dates for Perris, CA
In Perris, CA, the average last spring frost is around Jan 28 and the average first fall frost around Dec 18, for a growing season of about 329 days. For frost-tender plants, wait until Feb 27, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Elsinore, CA weather station, 10 miles away, elevation 1,268 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% | Feb 27 | Dec 1 |
| 20% | Feb 19 | Dec 6 |
| 30% | Feb 10 | Dec 10 |
| 40% | Feb 4 | Dec 13 |
| 50% | Jan 28 | Dec 18 |
| 60% | Jan 18 | Dec 22 |
| 70% | Jan 9 | Dec 28 |
| 80% | Jan 2 | Jan 4 |
| 90% | Dec 24 | Jan 24 |
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) | Feb 28 | Dec 2 |
| Frost / freeze (32°F) | Jan 28 | Dec 18 |
| Hard freeze (28°F) | Jan 1 | Dec 27 |
Planting calendar for Perris
Transplant Feb 4 – Feb 18
Transplant Feb 11 – Feb 25
Transplant Feb 11 – Feb 25
Transplant Feb 4 – Feb 18
Sow or transplant Feb 4 – Feb 18
Sow or transplant Feb 4 – Feb 18
Sow or transplant Feb 11 – Feb 25
Sow or transplant Dec 31 – Jan 14
Fall sowing Oct 23 – Nov 20
Fall sowing Oct 23 – Nov 13
Fall sowing Oct 9 – Oct 23
Sow or transplant Dec 31 – Jan 14
Fall sowing Oct 9 – Nov 6
Transplant Jan 14 – Jan 28
Fall sowing Sep 25 – Oct 9
Transplant Jan 7 – Jan 21
Fall sowing Sep 25 – Oct 9
Fall sowing Sep 25 – Oct 9
Fall sowing Nov 6 – Nov 27
Fall sowing Oct 9 – Oct 23
Plant Dec 31 – Jan 14
Based on the average last frost (Jan 28) and first frost (Dec 18). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.