Massena, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2 °C (low) to 12.2 °C (high). Annual precipitation averages 982 Millimeters. Massena is located in USDA Plant Hardiness Zone 4b. 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 | -13.7 °C | -4.2 °C | 71.12 mm |
| February | -12.7 °C | -2.8 °C | 57.15 mm |
| March | -6.7 °C | 2.8 °C | 61.98 mm |
| April | 1.2 °C | 11.4 °C | 82.3 mm |
| May | 7.9 °C | 19.4 °C | 81.79 mm |
| June | 13.1 °C | 24.2 °C | 97.28 mm |
| July | 15.6 °C | 26.8 °C | 97.79 mm |
| August | 14.6 °C | 25.8 °C | 84.58 mm |
| September | 10.2 °C | 21.7 °C | 90.68 mm |
| October | 4.3 °C | 14.1 °C | 102.11 mm |
| November | -1.6 °C | 6.8 °C | 79.76 mm |
| December | -8.3 °C | -0.2 °C | 75.44 mm |
| Annual | 2 °C | 12.2 °C | 981.98 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |