Valley, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.9 °F (low) to 74.7 °F (high). Annual precipitation averages 53.4 Inches. Valley is located in USDA Plant Hardiness Zone 8b. 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 | 33.6 °F | 56.4 °F | 5.07 in. |
| February | 36.6 °F | 60.4 °F | 4.89 in. |
| March | 42.8 °F | 68.1 °F | 5.24 in. |
| April | 49.6 °F | 75.0 °F | 4.71 in. |
| May | 59.0 °F | 82.2 °F | 3.73 in. |
| June | 66.7 °F | 87.9 °F | 4.1 in. |
| July | 70.1 °F | 90.6 °F | 5.34 in. |
| August | 69.6 °F | 89.7 °F | 3.97 in. |
| September | 64.2 °F | 85.2 °F | 3.61 in. |
| October | 52.4 °F | 76.2 °F | 3.29 in. |
| November | 41.9 °F | 66.3 °F | 3.93 in. |
| December | 36.4 °F | 58.7 °F | 5.48 in. |
| Annual | 51.9 °F | 74.7 °F | 53.36 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |