Newton, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.7 °C (low) to 25.2 °C (high). Annual precipitation averages 1493.5 Millimeters. Newton 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 | 3.1 °C | 15.8 °C | 125.73 mm |
| February | 4.7 °C | 17.7 °C | 136.91 mm |
| March | 7.9 °C | 21.8 °C | 147.57 mm |
| April | 11.7 °C | 25.3 °C | 125.22 mm |
| May | 16.5 °C | 29.5 °C | 101.09 mm |
| June | 20.7 °C | 32.1 °C | 142.49 mm |
| July | 22 °C | 32.9 °C | 150.62 mm |
| August | 21.6 °C | 32.5 °C | 123.19 mm |
| September | 19.2 °C | 30.7 °C | 116.08 mm |
| October | 13.1 °C | 26.2 °C | 78.49 mm |
| November | 7 °C | 20.7 °C | 119.38 mm |
| December | 4.6 °C | 16.8 °C | 126.75 mm |
| Annual | 12.7 °C | 25.2 °C | 1493.52 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 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 |