Lenox Dale, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.2 °C (low) to 14 °C (high). Annual precipitation averages 1244.1 Millimeters. Lenox Dale is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.5 °C | -0.2 °C | 90.93 mm |
| February | -9.8 °C | 1.5 °C | 79.5 mm |
| March | -5.2 °C | 5.8 °C | 89.66 mm |
| April | 0.7 °C | 13.7 °C | 92.71 mm |
| May | 6.6 °C | 20.3 °C | 102.11 mm |
| June | 11.7 °C | 24.6 °C | 123.7 mm |
| July | 14.4 °C | 27.2 °C | 117.86 mm |
| August | 13.7 °C | 26.1 °C | 109.98 mm |
| September | 9.3 °C | 22.3 °C | 111.76 mm |
| October | 3.3 °C | 15.4 °C | 125.48 mm |
| November | -1.7 °C | 8.7 °C | 89.41 mm |
| December | -6.4 °C | 2.6 °C | 111 mm |
| Annual | 2.2 °C | 14 °C | 1244.1 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |