Springfield, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.4 °F (low) to 60.6 °F (high). Annual precipitation averages 47.2 Inches. Springfield is located in USDA Plant Hardiness Zone 6b. 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 | 17.5 °F | 35.2 °F | 3.33 in. |
| February | 18.8 °F | 38.0 °F | 2.99 in. |
| March | 27.2 °F | 46.3 °F | 4.04 in. |
| April | 38.0 °F | 59.7 °F | 3.72 in. |
| May | 48.4 °F | 70.9 °F | 3.6 in. |
| June | 57.6 °F | 79.0 °F | 4.37 in. |
| July | 63.1 °F | 84.5 °F | 3.98 in. |
| August | 61.4 °F | 82.9 °F | 3.88 in. |
| September | 53.7 °F | 75.6 °F | 4.57 in. |
| October | 42.3 °F | 63.2 °F | 4.91 in. |
| November | 32.5 °F | 51.2 °F | 3.54 in. |
| December | 24.1 °F | 40.5 °F | 4.24 in. |
| Annual | 40.4 °F | 60.6 °F | 47.17 in. |
| 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |