Samson, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.5 °C (low) to 25.4 °C (high). Annual precipitation averages 1544.6 Millimeters. Samson 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 | 2.8 °C | 15.9 °C | 130.05 mm |
| February | 4.6 °C | 18.2 °C | 133.35 mm |
| March | 7.9 °C | 22.1 °C | 140.21 mm |
| April | 11.4 °C | 25.6 °C | 125.73 mm |
| May | 16.3 °C | 29.7 °C | 105.41 mm |
| June | 20.5 °C | 32.1 °C | 147.32 mm |
| July | 21.8 °C | 33.1 °C | 160.78 mm |
| August | 21.6 °C | 32.8 °C | 142.24 mm |
| September | 18.9 °C | 30.9 °C | 122.68 mm |
| October | 12.8 °C | 26.4 °C | 92.2 mm |
| November | 6.7 °C | 21.1 °C | 114.3 mm |
| December | 4.4 °C | 17.1 °C | 130.3 mm |
| Annual | 12.5 °C | 25.4 °C | 1544.57 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 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |