Lawrence, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4 °C (low) to 15.4 °C (high). Annual precipitation averages 1196.6 Millimeters. Lawrence is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.5 °C | 1.9 °C | 89.66 mm |
| February | -7.5 °C | 3.4 °C | 84.84 mm |
| March | -3.3 °C | 7.4 °C | 116.59 mm |
| April | 2.4 °C | 14.3 °C | 98.55 mm |
| May | 8.1 °C | 20.1 °C | 95.25 mm |
| June | 13.3 °C | 25.2 °C | 109.98 mm |
| July | 16.6 °C | 28.5 °C | 91.95 mm |
| August | 15.6 °C | 27.6 °C | 87.12 mm |
| September | 11.4 °C | 23.6 °C | 94.49 mm |
| October | 4.8 °C | 16.8 °C | 120.4 mm |
| November | -0.2 °C | 10.7 °C | 94.74 mm |
| December | -4.9 °C | 4.9 °C | 113.03 mm |
| Annual | 4 °C | 15.4 °C | 1196.6 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |