New London, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.9 °F (low) to 76.8 °F (high). Annual precipitation averages 47.7 Inches. New London 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 | 36.4 °F | 57.8 °F | 3.92 in. |
| February | 39.8 °F | 62.0 °F | 4.05 in. |
| March | 46.8 °F | 69.9 °F | 4.43 in. |
| April | 53.6 °F | 76.7 °F | 4.15 in. |
| May | 62.9 °F | 83.4 °F | 4.5 in. |
| June | 69.8 °F | 90.1 °F | 4.76 in. |
| July | 73.0 °F | 93.5 °F | 2.57 in. |
| August | 72.0 °F | 94.1 °F | 2.82 in. |
| September | 65.7 °F | 88.5 °F | 3.51 in. |
| October | 55.1 °F | 78.7 °F | 4.33 in. |
| November | 45.4 °F | 67.6 °F | 4.09 in. |
| December | 38.1 °F | 59.2 °F | 4.56 in. |
| Annual | 54.9 °F | 76.8 °F | 47.69 in. |
| 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 : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |