Frost Dates for La Porte, TX
In La Porte, TX, the average last spring frost is around Jan 31 and the average first fall frost around Dec 14, for a growing season of about 317 days. For frost-tender plants, wait until Mar 5, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Houston Nwso, TX weather station, 14 miles away, elevation 19 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 5 | Nov 19 |
| 20% | Feb 24 | Nov 29 |
| 30% | Feb 15 | Dec 3 |
| 40% | Feb 5 | Dec 9 |
| 50% | Jan 31 | Dec 14 |
| 60% | Jan 25 | Dec 22 |
| 70% | Jan 18 | Jan 1 |
| 80% | Jan 7 | Jan 7 |
| 90% | Dec 25 | Jan 19 |
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 22 | Nov 29 |
| Frost / freeze (32°F) | Jan 31 | Dec 14 |
| Hard freeze (28°F) | Jan 17 | Jan 3 |
Planting calendar for La Porte
Transplant Feb 7 – Feb 21
Transplant Feb 14 – Feb 28
Transplant Feb 14 – Feb 28
Transplant Feb 7 – Feb 21
Sow or transplant Feb 7 – Feb 21
Sow or transplant Feb 7 – Feb 21
Sow or transplant Feb 14 – Feb 28
Sow or transplant Jan 3 – Jan 17
Fall sowing Oct 19 – Nov 16
Fall sowing Oct 19 – Nov 9
Fall sowing Oct 5 – Oct 19
Sow or transplant Jan 3 – Jan 17
Fall sowing Oct 5 – Nov 2
Transplant Jan 17 – Jan 31
Fall sowing Sep 21 – Oct 5
Transplant Jan 10 – Jan 24
Fall sowing Sep 21 – Oct 5
Fall sowing Sep 21 – Oct 5
Fall sowing Nov 2 – Nov 23
Fall sowing Oct 5 – Oct 19
Plant Jan 3 – Jan 17
Based on the average last frost (Jan 31) and first frost (Dec 14). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.