Shiloh, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.5 °C (low) to 20.9 °C (high). Annual precipitation averages 1485.4 Millimeters. Shiloh is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.1 °C | 9.4 °C | 145.8 mm |
| February | 0.7 °C | 11.7 °C | 138.68 mm |
| March | 4.4 °C | 16.4 °C | 141.48 mm |
| April | 8.6 °C | 21.1 °C | 133.86 mm |
| May | 13.6 °C | 25.2 °C | 117.86 mm |
| June | 18 °C | 29.3 °C | 119.63 mm |
| July | 19.7 °C | 30.6 °C | 115.32 mm |
| August | 19.3 °C | 30.4 °C | 96.27 mm |
| September | 15.9 °C | 27.7 °C | 112.52 mm |
| October | 9.6 °C | 22.1 °C | 90.68 mm |
| November | 3.8 °C | 15.7 °C | 122.68 mm |
| December | 0.9 °C | 11 °C | 150.62 mm |
| Annual | 9.5 °C | 20.9 °C | 1485.4 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |