Frost Dates for League City, TX
In League City, 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, 2 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 League City
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.