Wayland, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.6 °F (low) to 60.3 °F (high). Annual precipitation averages 47.7 Inches. Wayland is located in USDA Plant Hardiness Zone 6b. 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 | 17.4 °F | 36.1 °F | 3.64 in. |
| February | 19.1 °F | 38.7 °F | 3.2 in. |
| March | 26.7 °F | 45.9 °F | 4.31 in. |
| April | 36.8 °F | 58.6 °F | 4.08 in. |
| May | 46.8 °F | 68.9 °F | 3.75 in. |
| June | 56.1 °F | 77.5 °F | 4.27 in. |
| July | 62.0 °F | 83.4 °F | 3.58 in. |
| August | 60.5 °F | 82.0 °F | 3.95 in. |
| September | 52.6 °F | 75.2 °F | 3.72 in. |
| October | 41.3 °F | 63.0 °F | 4.74 in. |
| November | 32.0 °F | 52.1 °F | 3.88 in. |
| December | 23.8 °F | 41.7 °F | 4.55 in. |
| Annual | 39.6 °F | 60.3 °F | 47.67 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |