Arab, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.9 °C (low) to 21.3 °C (high). Annual precipitation averages 1512.8 Millimeters. Arab 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 | -0.4 °C | 9.9 °C | 140.21 mm |
| February | 0.9 °C | 12.1 °C | 142.49 mm |
| March | 4.7 °C | 16.7 °C | 143.51 mm |
| April | 8.9 °C | 21.6 °C | 130.3 mm |
| May | 14.2 °C | 25.8 °C | 124.71 mm |
| June | 18.4 °C | 29.6 °C | 132.84 mm |
| July | 20.3 °C | 31.1 °C | 114.3 mm |
| August | 19.7 °C | 30.8 °C | 105.16 mm |
| September | 16.3 °C | 28.2 °C | 112.52 mm |
| October | 9.9 °C | 22.6 °C | 97.28 mm |
| November | 4.1 °C | 16.2 °C | 118.36 mm |
| December | 1.2 °C | 11.4 °C | 151.13 mm |
| Annual | 9.9 °C | 21.3 °C | 1512.81 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 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |