Frost Dates for Seguin, TX
In Seguin, TX, the average last spring frost is around Mar 1 and the average first fall frost around Nov 26, for a growing season of about 273 days. For frost-tender plants, wait until Mar 20, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Austin San Antonio, TX weather station, 9 miles away, elevation 633 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 20 | Nov 8 |
| 20% | Mar 13 | Nov 14 |
| 30% | Mar 8 | Nov 18 |
| 40% | Mar 5 | Nov 22 |
| 50% | Mar 1 | Nov 26 |
| 60% | Feb 25 | Dec 1 |
| 70% | Feb 21 | Dec 4 |
| 80% | Feb 15 | Dec 9 |
| 90% | Feb 3 | Dec 20 |
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 13 | Nov 15 |
| Frost / freeze (32°F) | Mar 1 | Nov 26 |
| Hard freeze (28°F) | Feb 13 | Dec 11 |
Planting calendar for Seguin
Transplant Mar 8 – Mar 22
Transplant Mar 15 – Mar 29
Transplant Mar 15 – Mar 29
Transplant Mar 8 – Mar 22
Sow or transplant Mar 8 – Mar 22
Sow or transplant Mar 8 – Mar 22
Sow or transplant Mar 15 – Mar 29
Sow or transplant Feb 1 – Feb 15
Fall sowing Oct 1 – Oct 29
Fall sowing Oct 1 – Oct 22
Fall sowing Sep 17 – Oct 1
Sow or transplant Feb 1 – Feb 15
Fall sowing Sep 17 – Oct 15
Transplant Feb 15 – Mar 1
Fall sowing Sep 3 – Sep 17
Transplant Feb 8 – Feb 22
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 Feb 1 – Feb 15
Based on the average last frost (Mar 1) and first frost (Nov 26). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.