Orange, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.4 °C (low) to 14.6 °C (high). Annual precipitation averages 1188.7 Millimeters. Orange is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.7 °C | 0.1 °C | 92.96 mm |
| February | -10 °C | 1.9 °C | 79.76 mm |
| March | -5.2 °C | 6.4 °C | 99.31 mm |
| April | 0.8 °C | 13.9 °C | 95.25 mm |
| May | 6.9 °C | 20.4 °C | 86.87 mm |
| June | 12.3 °C | 25.3 °C | 108.71 mm |
| July | 15.3 °C | 28.3 °C | 100.84 mm |
| August | 14.2 °C | 27.3 °C | 103.63 mm |
| September | 9.8 °C | 23.2 °C | 102.11 mm |
| October | 3.4 °C | 15.7 °C | 122.68 mm |
| November | -1.8 °C | 9 °C | 93.73 mm |
| December | -6.7 °C | 3.1 °C | 102.87 mm |
| Annual | 2.4 °C | 14.6 °C | 1188.72 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 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 |