Martinez, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52.4 °F (low) to 75.5 °F (high). Annual precipitation averages 46.7 Inches. Martinez is located in USDA Plant Hardiness Zone 8b. 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 | 34.6 °F | 56.9 °F | 4.06 in. |
| February | 37.0 °F | 60.4 °F | 3.84 in. |
| March | 43.2 °F | 68.1 °F | 4.43 in. |
| April | 50.8 °F | 76.0 °F | 3.1 in. |
| May | 59.6 °F | 83.4 °F | 3.22 in. |
| June | 67.5 °F | 89.3 °F | 4.72 in. |
| July | 70.4 °F | 92.2 °F | 4.61 in. |
| August | 69.7 °F | 90.8 °F | 4.55 in. |
| September | 64.2 °F | 86.0 °F | 3.92 in. |
| October | 53.1 °F | 76.9 °F | 2.9 in. |
| November | 41.8 °F | 66.8 °F | 3.2 in. |
| December | 36.7 °F | 59.0 °F | 4.11 in. |
| Annual | 52.4 °F | 75.5 °F | 46.66 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 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |