Cecil, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.2 °C (low) to 25.9 °C (high). Annual precipitation averages 1279.9 Millimeters. Cecil is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.9 °C | 16.8 °C | 118.11 mm |
| February | 5.6 °C | 18.9 °C | 103.38 mm |
| March | 8.7 °C | 22.6 °C | 129.29 mm |
| April | 12.2 °C | 26.2 °C | 86.61 mm |
| May | 16.6 °C | 29.9 °C | 70.1 mm |
| June | 20.7 °C | 32.3 °C | 143.51 mm |
| July | 21.9 °C | 33.2 °C | 137.92 mm |
| August | 21.8 °C | 32.8 °C | 147.83 mm |
| September | 19.5 °C | 30.9 °C | 106.17 mm |
| October | 13.8 °C | 26.9 °C | 78.23 mm |
| November | 8 °C | 21.8 °C | 62.99 mm |
| December | 5.3 °C | 18.2 °C | 95.76 mm |
| Annual | 13.2 °C | 25.9 °C | 1279.9 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |