Johns Creek, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.2 °F (low) to 71.5 °F (high). Annual precipitation averages 55.2 Inches. Johns Creek is located in USDA Plant Hardiness Zone 8a. 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 | 31.1 °F | 51.5 °F | 5.07 in. |
| February | 34.2 °F | 55.7 °F | 4.99 in. |
| March | 40.4 °F | 63.8 °F | 5.26 in. |
| April | 48.5 °F | 72.1 °F | 4.34 in. |
| May | 57.9 °F | 79.6 °F | 4.05 in. |
| June | 65.9 °F | 85.8 °F | 4.64 in. |
| July | 69.4 °F | 88.4 °F | 5.32 in. |
| August | 68.6 °F | 87.9 °F | 4.42 in. |
| September | 62.3 °F | 82.5 °F | 4.33 in. |
| October | 50.5 °F | 73.1 °F | 3.76 in. |
| November | 39.3 °F | 62.6 °F | 4.28 in. |
| December | 34.3 °F | 54.4 °F | 4.71 in. |
| Annual | 50.2 °F | 71.5 °F | 55.17 in. |
| 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 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |