Westover, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.2 °C (low) to 23.8 °C (high). Annual precipitation averages 1455.7 Millimeters. Westover 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 | 0.2 °C | 12.9 °C | 132.33 mm |
| February | 1.9 °C | 15.4 °C | 139.45 mm |
| March | 5.2 °C | 19.8 °C | 138.94 mm |
| April | 9.1 °C | 24.2 °C | 129.29 mm |
| May | 14.2 °C | 28 °C | 113.03 mm |
| June | 18.6 °C | 31.3 °C | 124.97 mm |
| July | 20.6 °C | 32.9 °C | 122.17 mm |
| August | 20.1 °C | 32.6 °C | 109.22 mm |
| September | 16.8 °C | 30.2 °C | 107.7 mm |
| October | 9.9 °C | 24.9 °C | 86.11 mm |
| November | 4.1 °C | 18.8 °C | 115.32 mm |
| December | 1.6 °C | 14.2 °C | 137.16 mm |
| Annual | 10.2 °C | 23.8 °C | 1455.69 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |