Brookside, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.9 °F (low) to 74.2 °F (high). Annual precipitation averages 58.5 Inches. Brookside 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 | 32.4 °F | 54.4 °F | 5.4 in. |
| February | 35.1 °F | 58.7 °F | 5.4 in. |
| March | 42.0 °F | 67.0 °F | 5.79 in. |
| April | 49.1 °F | 75.1 °F | 5.2 in. |
| May | 58.3 °F | 81.9 °F | 4.6 in. |
| June | 66.1 °F | 88.0 °F | 4.81 in. |
| July | 69.5 °F | 91.1 °F | 5.04 in. |
| August | 68.7 °F | 90.6 °F | 4.17 in. |
| September | 62.9 °F | 86.2 °F | 4.51 in. |
| October | 50.8 °F | 76.1 °F | 3.45 in. |
| November | 40.3 °F | 65.1 °F | 4.71 in. |
| December | 35.2 °F | 56.7 °F | 5.4 in. |
| Annual | 50.9 °F | 74.2 °F | 58.48 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 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |