Seadrift, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 63.9 °F (low) to 77.6 °F (high). Annual precipitation averages 40.4 Inches. Seadrift is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 46.6 °F | 62.9 °F | 2.82 in. |
| February | 50.5 °F | 66.6 °F | 2.01 in. |
| March | 57.0 °F | 71.0 °F | 2.95 in. |
| April | 63.4 °F | 76.3 °F | 2.31 in. |
| May | 71.1 °F | 82.3 °F | 3.89 in. |
| June | 76.5 °F | 87.3 °F | 4.15 in. |
| July | 78.2 °F | 88.7 °F | 3.54 in. |
| August | 77.8 °F | 90.0 °F | 3.52 in. |
| September | 73.8 °F | 88.0 °F | 5.73 in. |
| October | 66.3 °F | 80.9 °F | 3.97 in. |
| November | 56.4 °F | 72.1 °F | 2.97 in. |
| December | 48.9 °F | 65.0 °F | 2.54 in. |
| Annual | 63.9 °F | 77.6 °F | 40.4 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |