Marbury, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.2 °C (low) to 23.7 °C (high). Annual precipitation averages 1423.2 Millimeters. Marbury is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.3 °C | 13.3 °C | 137.92 mm |
| February | 2.9 °C | 15.8 °C | 141.48 mm |
| March | 6.3 °C | 20.2 °C | 137.67 mm |
| April | 10 °C | 23.9 °C | 122.43 mm |
| May | 15 °C | 27.9 °C | 105.16 mm |
| June | 19.3 °C | 31.1 °C | 122.43 mm |
| July | 21.1 °C | 32.4 °C | 124.46 mm |
| August | 20.7 °C | 32.1 °C | 105.92 mm |
| September | 17.8 °C | 29.8 °C | 97.03 mm |
| October | 11.4 °C | 24.4 °C | 81.53 mm |
| November | 5.4 °C | 18.8 °C | 108.97 mm |
| December | 2.7 °C | 14.3 °C | 138.18 mm |
| Annual | 11.2 °C | 23.7 °C | 1423.18 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°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 |