Megargel, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.5 °C (low) to 24.7 °C (high). Annual precipitation averages 1547.9 Millimeters. Megargel is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.9 °C | 15.1 °C | 147.57 mm |
| February | 4.6 °C | 17.3 °C | 123.95 mm |
| March | 7.9 °C | 21.3 °C | 131.83 mm |
| April | 11.8 °C | 24.8 °C | 117.35 mm |
| May | 16.3 °C | 28.9 °C | 120.14 mm |
| June | 20.2 °C | 31.6 °C | 156.46 mm |
| July | 21.6 °C | 32.6 °C | 155.45 mm |
| August | 21.2 °C | 32.3 °C | 128.02 mm |
| September | 18.8 °C | 30.3 °C | 122.94 mm |
| October | 12.8 °C | 25.6 °C | 92.71 mm |
| November | 7.2 °C | 20.4 °C | 119.38 mm |
| December | 4.5 °C | 16.4 °C | 132.08 mm |
| Annual | 12.5 °C | 24.7 °C | 1547.88 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |