Frost Dates for Tracy, CA
In Tracy, CA, the average last spring frost is around Feb 25 and the average first fall frost around Nov 26, for a growing season of about 272 days. For frost-tender plants, wait until Apr 6, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Tracy Carbona, CA weather station, 7 miles away, elevation 135 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% | Apr 6 | Nov 8 |
| 20% | Mar 28 | Nov 16 |
| 30% | Mar 9 | Nov 20 |
| 40% | Mar 1 | Nov 23 |
| 50% | Feb 25 | Nov 26 |
| 60% | Feb 19 | Nov 29 |
| 70% | Feb 12 | Dec 2 |
| 80% | Feb 5 | Dec 6 |
| 90% | Jan 24 | Dec 12 |
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) | Apr 3 | Nov 12 |
| Frost / freeze (32°F) | Feb 25 | Nov 26 |
| Hard freeze (28°F) | Jan 18 | Dec 11 |
Planting calendar for Tracy
Transplant Mar 4 – Mar 18
Transplant Mar 11 – Mar 25
Transplant Mar 11 – Mar 25
Transplant Mar 4 – Mar 18
Sow or transplant Mar 4 – Mar 18
Sow or transplant Mar 4 – Mar 18
Sow or transplant Mar 11 – Mar 25
Sow or transplant Jan 28 – Feb 11
Fall sowing Oct 1 – Oct 29
Fall sowing Oct 1 – Oct 22
Fall sowing Sep 17 – Oct 1
Sow or transplant Jan 28 – Feb 11
Fall sowing Sep 17 – Oct 15
Transplant Feb 11 – Feb 25
Fall sowing Sep 3 – Sep 17
Transplant Feb 4 – Feb 18
Fall sowing Sep 3 – Sep 17
Fall sowing Sep 3 – Sep 17
Fall sowing Oct 15 – Nov 5
Fall sowing Sep 17 – Oct 1
Plant Jan 28 – Feb 11
Based on the average last frost (Feb 25) and first frost (Nov 26). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.