Pittsfield, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.1 °C (low) to 13.9 °C (high). Annual precipitation averages 1184.9 Millimeters. Pittsfield 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 | -10.6 °C | -0.3 °C | 84.58 mm |
| February | -9.8 °C | 1.4 °C | 69.6 mm |
| March | -5.4 °C | 5.8 °C | 86.36 mm |
| April | 0.7 °C | 13.4 °C | 92.71 mm |
| May | 6.6 °C | 20 °C | 92.46 mm |
| June | 11.7 °C | 24.5 °C | 119.13 mm |
| July | 14.4 °C | 26.9 °C | 113.79 mm |
| August | 13.7 °C | 25.9 °C | 113.03 mm |
| September | 9.3 °C | 22.1 °C | 110.24 mm |
| October | 3.3 °C | 15.4 °C | 116.84 mm |
| November | -1.8 °C | 8.7 °C | 85.09 mm |
| December | -6.5 °C | 2.6 °C | 101.09 mm |
| Annual | 2.1 °C | 13.9 °C | 1184.92 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 | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |