Frost Dates for Murrieta, CA
In Murrieta, CA, the average last spring frost is around Feb 2 and the average first fall frost around Jan 30, for a growing season of about 365 days. For frost-tender plants, wait until Feb 24, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Fallbrook 5 Ne, CA weather station, 9 miles away, elevation 1,140 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 24 | Dec 23 |
| 20% | Feb 18 | Dec 31 |
| 30% | Feb 14 | Jan 3 |
| 40% | Feb 9 | Jan 11 |
| 50% | Feb 2 | Jan 30 |
| 60% | Jan 15 | Feb 7 |
| 70% | Jan 6 | Feb 12 |
| 80% | Jan 1 | Feb 17 |
| 90% | Dec 26 | Feb 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 7 | Jan 1 |
| Frost / freeze (32°F) | Feb 2 | Jan 30 |
| Hard freeze (28°F) | — | — |
Planting calendar for Murrieta
Transplant Feb 9 – Feb 23
Transplant Feb 16 – Mar 2
Transplant Feb 16 – Mar 2
Transplant Feb 9 – Feb 23
Sow or transplant Feb 9 – Feb 23
Sow or transplant Feb 9 – Feb 23
Sow or transplant Feb 16 – Mar 2
Sow or transplant Jan 5 – Jan 19
Fall sowing Dec 5 – Jan 2
Fall sowing Dec 5 – Dec 26
Fall sowing Nov 21 – Dec 5
Sow or transplant Jan 5 – Jan 19
Fall sowing Nov 21 – Dec 19
Transplant Jan 19 – Feb 2
Fall sowing Nov 7 – Nov 21
Transplant Jan 12 – Jan 26
Fall sowing Nov 7 – Nov 21
Fall sowing Nov 7 – Nov 21
Fall sowing Dec 19 – Jan 9
Fall sowing Nov 21 – Dec 5
Plant Jan 5 – Jan 19
Based on the average last frost (Feb 2) and first frost (Jan 30). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.