Frost dates for 77623High Island, TX
The average last spring frost in High Island is February 12 and the average first fall frost is December 6, giving a typical growing season of about 302 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Feb 12
- Average first fall frost
- Dec 6
- Growing season
- 302 days
Safer after Mar 10 (1-in-10 risk)
Possible by Nov 16 (1-in-10 risk)
First frost typically in 41 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Feb 3 · Feb 28 · Mar 22 | Nov 5 · Nov 24 · Dec 13 | 269 days | 100% |
| Frost / freeze (32°F) | Jan 10 · Feb 12 · Mar 10 | Nov 16 · Dec 6 · Jan 7 | 302 days | 98% |
| Hard freeze (28°F) | Dec 19 · Jan 25 · Feb 27 | Nov 29 · Dec 31 · Feb 1 | 341 days | 77% |
Planting calendar for High Island
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Jan 12 – Mar 20 |
| Tomatoes | Transplant outdoors | Feb 28 – Aug 16 |
| Peppers | Start seeds indoors | Jan 12 – Feb 12 |
| Peppers | Transplant outdoors | Mar 14 – Apr 14 |
| Eggplant | Start seeds indoors | Jan 29 – Feb 27 |
| Eggplant | Transplant outdoors | Mar 14 – Apr 14 |
| Cucumbers | Sow outdoors | Mar 14 – Aug 26 |
| Summer squash | Sow outdoors | Feb 28 – Apr 14 |
| Winter squash & pumpkins | Sow outdoors | Mar 14 – Apr 14 |
| Snap beans | Sow outdoors | Feb 28 – Sep 18 |
| Sweet corn | Sow outdoors | Feb 28 – Aug 16 |
| Watermelon & cantaloupe | Sow outdoors | Mar 14 – Apr 14 |
| Okra | Sow outdoors | Mar 7 – Mar 30 |
| Peas | Sow outdoors (spring) | Jan 12 – Feb 27 |
| Potatoes | Plant outdoors (spring) | Jan 12 – Mar 14 |
| Onions | Start seeds indoors (spring) | Dec 1 – Dec 28 |
| Onions | Transplant outdoors (spring) | Jan 29 – Feb 27 |
| Broccoli | Start seeds indoors (spring) | Dec 25 – Jan 28 |
| Broccoli | Transplant outdoors (spring) | Jan 29 – Feb 27 |
| Broccoli | Start seeds indoors (fall) | Aug 6 – Aug 16 |
| Broccoli | Transplant outdoors (fall) | Sep 5 – Sep 16 |
| Cabbage | Start seeds indoors (spring) | Dec 15 – Jan 12 |
| Cabbage | Transplant outdoors (spring) | Jan 12 – Feb 12 |
| Cabbage | Start seeds indoors (fall) | Jul 27 – Aug 26 |
| Cabbage | Transplant outdoors (fall) | Aug 26 – Sep 26 |
| Leaf lettuce | Sow outdoors (spring) | Jan 12 – Mar 30 |
| Leaf lettuce | Sow outdoors (fall) | Aug 26 – Oct 12 |
| Spinach | Sow outdoors (spring) | Jan 5 – Feb 18 |
| Spinach | Sow outdoors (fall) | Sep 12 – Oct 17 |
| Radishes | Sow outdoors (spring) | Jan 12 – Mar 4 |
| Radishes | Sow outdoors (fall) | Aug 26 – Oct 27 |
| Kale | Sow outdoors (spring) | Jan 29 – Feb 18 |
| Kale | Sow outdoors (fall) | Aug 19 – Sep 26 |
| Carrots | Sow outdoors (spring) | Feb 12 – Mar 30 |
| Carrots | Sow outdoors (fall) | Jul 27 – Sep 11 |
| Garlic | Plant outdoors (fall) | Nov 26 – Dec 27 |
Where these dates come from
ZIP code 77623 is matched to the NOAA station Anahuac, TX, 33.4 km away, at 24 ft elevation (24 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Anahuac, TX (used) | 24 ft | Feb 12 | Dec 6 |
| Galveston, TX | 7 ft | Jan 25 | Jan 1 |
| Galveston Scholes Fld, TX | 5 ft | Jan 18 | Jan 7 |
| Beaumont Rsch Ctr, TX | 27 ft | Feb 18 | Dec 2 |
Frost dates near High Island
- Gilchrist, TX 77617 · last Feb 12, first Dec 6
- Anahuac, TX 77514 · last Feb 12, first Dec 6
- Stowell, TX 77661 · last Feb 12, first Dec 6
- Port Bolivar, TX 77650 · last Jan 18, first Jan 7
- Winnie, TX 77665 · last Feb 12, first Dec 6
- Hamshire, TX 77622 · last Feb 18, first Dec 2
- Hankamer, TX 77560 · last Feb 12, first Dec 6
- Wallisville, TX 77597 · last Feb 12, first Dec 6
Frequently asked questions
- When is the last frost in High Island, TX?
- For ZIP code 77623, the average last spring frost (32°F) is February 12, based on NOAA 1991-2020 climate normals for the Anahuac, TX weather station. There is a 1-in-10 chance of a frost after March 10.
- When is the first frost in High Island, TX?
- The average first fall frost (32°F) is December 6. There is a 1-in-10 chance of frost by November 16, so tender plants are at risk from that point on.
- How long is the growing season in 77623?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 302 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.