Massena, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.6 °F (low) to 53.9 °F (high). Annual precipitation averages 38.7 Inches. 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 | 7.4 °F | 24.4 °F | 2.8 in. |
| February | 9.1 °F | 26.9 °F | 2.25 in. |
| March | 20.0 °F | 37.1 °F | 2.44 in. |
| April | 34.1 °F | 52.6 °F | 3.24 in. |
| May | 46.2 °F | 67.0 °F | 3.22 in. |
| June | 55.5 °F | 75.5 °F | 3.83 in. |
| July | 60.1 °F | 80.2 °F | 3.85 in. |
| August | 58.2 °F | 78.5 °F | 3.33 in. |
| September | 50.4 °F | 71.1 °F | 3.57 in. |
| October | 39.8 °F | 57.4 °F | 4.02 in. |
| November | 29.1 °F | 44.3 °F | 3.14 in. |
| December | 17.0 °F | 31.6 °F | 2.97 in. |
| Annual | 35.6 °F | 53.9 °F | 38.66 in. |
| 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 : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |