London, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.6 °F (low) to 72.7 °F (high). Annual precipitation averages 50.9 Inches. London 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 Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.3 °F | 50.0 °F | 3.66 in. |
| February | 32.3 °F | 55.2 °F | 3.46 in. |
| March | 39.8 °F | 64.0 °F | 4.68 in. |
| April | 48.4 °F | 73.3 °F | 5.09 in. |
| May | 58.4 °F | 80.6 °F | 5.54 in. |
| June | 66.6 °F | 88.4 °F | 3.95 in. |
| July | 70.3 °F | 92.8 °F | 3.73 in. |
| August | 68.8 °F | 92.7 °F | 3.65 in. |
| September | 61.2 °F | 85.9 °F | 3.77 in. |
| October | 49.2 °F | 75.1 °F | 4.07 in. |
| November | 39.1 °F | 62.1 °F | 4.83 in. |
| December | 31.9 °F | 52.3 °F | 4.5 in. |
| Annual | 49.6 °F | 72.7 °F | 50.93 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |