Frost Dates for Del Rio, TX
In Del Rio, TX, the average last spring frost is around Feb 16 and the average first fall frost around Dec 3, for a growing season of about 293 days. For frost-tender plants, wait until Mar 10, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Del Rio Intl. Airport, TX weather station, 3 miles away, elevation 999 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% | Mar 10 | Nov 14 |
| 20% | Mar 3 | Nov 21 |
| 30% | Feb 26 | Nov 25 |
| 40% | Feb 21 | Nov 30 |
| 50% | Feb 16 | Dec 3 |
| 60% | Feb 10 | Dec 7 |
| 70% | Feb 5 | Dec 11 |
| 80% | Jan 29 | Dec 17 |
| 90% | Jan 19 | Dec 26 |
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) | Mar 3 | Nov 20 |
| Frost / freeze (32°F) | Feb 16 | Dec 3 |
| Hard freeze (28°F) | Jan 24 | Dec 18 |
Planting calendar for Del Rio
Transplant Feb 23 – Mar 9
Transplant Mar 2 – Mar 16
Transplant Mar 2 – Mar 16
Transplant Feb 23 – Mar 9
Sow or transplant Feb 23 – Mar 9
Sow or transplant Feb 23 – Mar 9
Sow or transplant Mar 2 – Mar 16
Sow or transplant Jan 19 – Feb 2
Fall sowing Oct 8 – Nov 5
Fall sowing Oct 8 – Oct 29
Fall sowing Sep 24 – Oct 8
Sow or transplant Jan 19 – Feb 2
Fall sowing Sep 24 – Oct 22
Transplant Feb 2 – Feb 16
Fall sowing Sep 10 – Sep 24
Transplant Jan 26 – Feb 9
Fall sowing Sep 10 – Sep 24
Fall sowing Sep 10 – Sep 24
Fall sowing Oct 22 – Nov 12
Fall sowing Sep 24 – Oct 8
Plant Jan 19 – Feb 2
Based on the average last frost (Feb 16) and first frost (Dec 3). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.