Guin, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.2 °F (low) to 73 °F (high). Annual precipitation averages 61.6 Inches. Guin 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 | 30.0 °F | 52.2 °F | 5.7 in. |
| February | 33.2 °F | 56.9 °F | 5.84 in. |
| March | 39.9 °F | 65.5 °F | 5.42 in. |
| April | 47.6 °F | 73.6 °F | 5.87 in. |
| May | 57.2 °F | 80.8 °F | 5.7 in. |
| June | 65.2 °F | 87.3 °F | 4.95 in. |
| July | 68.7 °F | 90.2 °F | 4.93 in. |
| August | 67.8 °F | 90.3 °F | 4.33 in. |
| September | 61.1 °F | 85.4 °F | 4.01 in. |
| October | 48.8 °F | 75.3 °F | 3.94 in. |
| November | 37.9 °F | 63.6 °F | 4.71 in. |
| December | 32.9 °F | 54.8 °F | 6.22 in. |
| Annual | 49.2 °F | 73 °F | 61.62 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |