Frost Dates for Southlake, TX
In Southlake, TX, the average last spring frost is around Mar 14 and the average first fall frost around Nov 17, for a growing season of about 249 days. For frost-tender plants, wait until Apr 3, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Grapevine Dam, TX weather station, 5 miles away, elevation 585 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 3 | Nov 2 |
| 20% | Mar 29 | Nov 6 |
| 30% | Mar 23 | Nov 9 |
| 40% | Mar 18 | Nov 13 |
| 50% | Mar 14 | Nov 17 |
| 60% | Mar 11 | Nov 21 |
| 70% | Mar 6 | Nov 25 |
| 80% | Mar 1 | Nov 29 |
| 90% | Feb 23 | Dec 4 |
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 29 | Nov 7 |
| Frost / freeze (32°F) | Mar 14 | Nov 17 |
| Hard freeze (28°F) | Mar 1 | Nov 29 |
Planting calendar for Southlake
Transplant Mar 21 – Apr 4
Transplant Mar 28 – Apr 11
Transplant Mar 28 – Apr 11
Transplant Mar 21 – Apr 4
Sow or transplant Mar 21 – Apr 4
Sow or transplant Mar 21 – Apr 4
Sow or transplant Mar 28 – Apr 11
Sow or transplant Feb 14 – Feb 28
Fall sowing Sep 22 – Oct 20
Fall sowing Sep 22 – Oct 13
Fall sowing Sep 8 – Sep 22
Sow or transplant Feb 14 – Feb 28
Fall sowing Sep 8 – Oct 6
Transplant Feb 28 – Mar 14
Fall sowing Aug 25 – Sep 8
Transplant Feb 21 – Mar 7
Fall sowing Aug 25 – Sep 8
Fall sowing Aug 25 – Sep 8
Fall sowing Oct 6 – Oct 27
Fall sowing Sep 8 – Sep 22
Plant Feb 14 – Feb 28
Based on the average last frost (Mar 14) and first frost (Nov 17). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.