Bostwick, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.7 °F (low) to 73 °F (high). Annual precipitation averages 50.2 Inches. Bostwick is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 32.3 °F | 53.9 °F | 4.55 in. |
| February | 35.0 °F | 57.4 °F | 4.58 in. |
| March | 41.1 °F | 65.5 °F | 4.74 in. |
| April | 48.9 °F | 73.4 °F | 3.67 in. |
| May | 58.0 °F | 80.7 °F | 3.32 in. |
| June | 66.1 °F | 87.2 °F | 4.96 in. |
| July | 69.5 °F | 90.1 °F | 4.12 in. |
| August | 68.7 °F | 88.9 °F | 4.53 in. |
| September | 62.5 °F | 83.7 °F | 3.91 in. |
| October | 51.0 °F | 74.4 °F | 3.31 in. |
| November | 39.9 °F | 64.4 °F | 3.92 in. |
| December | 34.8 °F | 56.0 °F | 4.56 in. |
| Annual | 50.7 °F | 73 °F | 50.17 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |