Frost Dates for Brawley, CA
In Brawley, CA, the average last spring frost is around Jan 16 and the average first fall frost around Dec 19, for a growing season of about 335 days. For frost-tender plants, wait until Feb 17, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Brawley 2 Sw, CA weather station, 2 miles away, elevation -100 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 17 | Dec 2 |
| 20% | Feb 7 | Dec 7 |
| 30% | Feb 1 | Dec 11 |
| 40% | Jan 24 | Dec 15 |
| 50% | Jan 16 | Dec 19 |
| 60% | Jan 10 | Dec 23 |
| 70% | Jan 5 | Dec 28 |
| 80% | Dec 31 | Jan 3 |
| 90% | Dec 21 | Jan 17 |
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 10 | Dec 6 |
| Frost / freeze (32°F) | Jan 16 | Dec 19 |
| Hard freeze (28°F) | Jan 2 | Dec 29 |
Planting calendar for Brawley
Transplant Jan 23 – Feb 6
Transplant Jan 30 – Feb 13
Transplant Jan 30 – Feb 13
Transplant Jan 23 – Feb 6
Sow or transplant Jan 23 – Feb 6
Sow or transplant Jan 23 – Feb 6
Sow or transplant Jan 30 – Feb 13
Sow or transplant Dec 19 – Jan 2
Fall sowing Oct 24 – Nov 21
Fall sowing Oct 24 – Nov 14
Fall sowing Oct 10 – Oct 24
Sow or transplant Dec 19 – Jan 2
Fall sowing Oct 10 – Nov 7
Transplant Jan 2 – Jan 16
Fall sowing Sep 26 – Oct 10
Transplant Dec 26 – Jan 9
Fall sowing Sep 26 – Oct 10
Fall sowing Sep 26 – Oct 10
Fall sowing Nov 7 – Nov 28
Fall sowing Oct 10 – Oct 24
Plant Dec 19 – Jan 2
Based on the average last frost (Jan 16) and first frost (Dec 19). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.