Bartow, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.6 °C (low) to 24.9 °C (high). Annual precipitation averages 1206.3 Millimeters. Bartow is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.8 °C | 14.8 °C | 109.47 mm |
| February | 3.3 °C | 16.9 °C | 106.68 mm |
| March | 6.7 °C | 20.9 °C | 110.74 mm |
| April | 10.4 °C | 25.2 °C | 86.11 mm |
| May | 15.4 °C | 29.2 °C | 77.98 mm |
| June | 19.8 °C | 32.3 °C | 121.67 mm |
| July | 21.6 °C | 33.8 °C | 121.67 mm |
| August | 21.3 °C | 33.1 °C | 122.17 mm |
| September | 18.2 °C | 30.5 °C | 95.25 mm |
| October | 11.7 °C | 25.6 °C | 71.12 mm |
| November | 5.8 °C | 20.2 °C | 74.68 mm |
| December | 3 °C | 15.9 °C | 108.71 mm |
| Annual | 11.6 °C | 24.9 °C | 1206.25 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |