Frost Dates for Pacifica, CA
In Pacifica, CA, the average last spring frost is around Jan 11 and the average first fall frost around Jan 10, for a growing season of about 365 days. For frost-tender plants, wait until Feb 12, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Pacifica 4 Sse, CA weather station, 1 mile away, elevation 475 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 12 | Dec 22 |
| 20% | Jan 30 | Dec 28 |
| 30% | Jan 26 | Jan 1 |
| 40% | Jan 21 | Jan 5 |
| 50% | Jan 11 | Jan 10 |
| 60% | Jan 7 | Jan 16 |
| 70% | Jan 4 | Jan 23 |
| 80% | Dec 31 | Jan 26 |
| 90% | Dec 23 | Feb 5 |
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) | Jan 25 | Jan 4 |
| Frost / freeze (32°F) | Jan 11 | Jan 10 |
| Hard freeze (28°F) | — | — |
Planting calendar for Pacifica
Transplant Jan 18 – Feb 1
Transplant Jan 25 – Feb 8
Transplant Jan 25 – Feb 8
Transplant Jan 18 – Feb 1
Sow or transplant Jan 18 – Feb 1
Sow or transplant Jan 18 – Feb 1
Sow or transplant Jan 25 – Feb 8
Sow or transplant Dec 14 – Dec 28
Fall sowing Nov 15 – Dec 13
Fall sowing Nov 15 – Dec 6
Fall sowing Nov 1 – Nov 15
Sow or transplant Dec 14 – Dec 28
Fall sowing Nov 1 – Nov 29
Transplant Dec 28 – Jan 11
Fall sowing Oct 18 – Nov 1
Transplant Dec 21 – Jan 4
Fall sowing Oct 18 – Nov 1
Fall sowing Oct 18 – Nov 1
Fall sowing Nov 29 – Dec 20
Fall sowing Nov 1 – Nov 15
Plant Dec 14 – Dec 28
Based on the average last frost (Jan 11) and first frost (Jan 10). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.