Jasper, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.5 °C (low) to 20.8 °C (high). Annual precipitation averages 1461.5 Millimeters. Jasper 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 | -0.6 °C | 9.7 °C | 140.97 mm |
| February | 0.6 °C | 11.9 °C | 128.27 mm |
| March | 4.4 °C | 16.5 °C | 140.46 mm |
| April | 8.6 °C | 21.1 °C | 128.27 mm |
| May | 13.3 °C | 25 °C | 101.09 mm |
| June | 17.7 °C | 28.6 °C | 123.44 mm |
| July | 19.6 °C | 30.2 °C | 121.16 mm |
| August | 19.2 °C | 29.9 °C | 115.06 mm |
| September | 15.9 °C | 27.2 °C | 106.43 mm |
| October | 9.7 °C | 21.7 °C | 100.84 mm |
| November | 4.2 °C | 16 °C | 117.86 mm |
| December | 1.3 °C | 11.2 °C | 137.67 mm |
| Annual | 9.5 °C | 20.8 °C | 1461.52 mm |
| 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 : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |