Gibson, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.3 °C (low) to 21.3 °C (high). Annual precipitation averages 1418.1 Millimeters. Gibson is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -2.1 °C | 8.4 °C | 105.92 mm |
| February | -0.3 °C | 11 °C | 120.65 mm |
| March | 3.8 °C | 16.1 °C | 139.19 mm |
| April | 8.9 °C | 21.9 °C | 132.08 mm |
| May | 14.4 °C | 26.4 °C | 150.62 mm |
| June | 18.9 °C | 30.4 °C | 112.52 mm |
| July | 20.7 °C | 32.1 °C | 109.22 mm |
| August | 19.7 °C | 31.9 °C | 92.71 mm |
| September | 15.4 °C | 28.7 °C | 102.62 mm |
| October | 8.8 °C | 22.8 °C | 98.3 mm |
| November | 3.3 °C | 15.8 °C | 117.86 mm |
| December | -0.4 °C | 10.2 °C | 136.4 mm |
| Annual | 9.3 °C | 21.3 °C | 1418.09 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |