Bolivar Peninsula, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 65.5 °F (low) to 75.7 °F (high). Annual precipitation averages 55.8 Inches. Bolivar Peninsula is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 48.4 °F | 60.4 °F | 4.83 in. |
| February | 51.6 °F | 63.1 °F | 3.28 in. |
| March | 57.8 °F | 68.3 °F | 3.52 in. |
| April | 64.6 °F | 74.0 °F | 4.04 in. |
| May | 72.1 °F | 80.2 °F | 4.27 in. |
| June | 77.7 °F | 85.7 °F | 5.16 in. |
| July | 80.2 °F | 89.0 °F | 4.55 in. |
| August | 79.3 °F | 88.4 °F | 5.87 in. |
| September | 76.2 °F | 85.9 °F | 6.42 in. |
| October | 68.6 °F | 79.6 °F | 5.0 in. |
| November | 58.2 °F | 70.1 °F | 4.45 in. |
| December | 50.8 °F | 63.2 °F | 4.42 in. |
| Annual | 65.5 °F | 75.7 °F | 55.81 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |