Littleton, West Virginia has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.9 °F (low) to 63.5 °F (high). Annual precipitation averages 47.6 Inches. Littleton is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.9 °F | 39.0 °F | 4.24 in. |
| February | 21.5 °F | 42.4 °F | 3.28 in. |
| March | 28.0 °F | 51.9 °F | 4.17 in. |
| April | 37.6 °F | 65.5 °F | 4.02 in. |
| May | 47.7 °F | 74.0 °F | 4.4 in. |
| June | 56.6 °F | 81.0 °F | 4.5 in. |
| July | 60.8 °F | 84.3 °F | 4.53 in. |
| August | 59.3 °F | 83.4 °F | 3.93 in. |
| September | 52.1 °F | 77.9 °F | 3.69 in. |
| October | 40.2 °F | 66.1 °F | 3.36 in. |
| November | 30.9 °F | 53.7 °F | 3.36 in. |
| December | 24.7 °F | 43.0 °F | 4.07 in. |
| Annual | 39.9 °F | 63.5 °F | 47.55 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |