Black River, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36 °F (low) to 54.8 °F (high). Annual precipitation averages 43.5 Inches. Black River is located in USDA Plant Hardiness Zone 5a. 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 | 9.6 °F | 28.1 °F | 3.78 in. |
| February | 10.6 °F | 29.9 °F | 2.59 in. |
| March | 20.4 °F | 38.6 °F | 2.74 in. |
| April | 33.4 °F | 53.1 °F | 3.4 in. |
| May | 45.6 °F | 66.3 °F | 3.51 in. |
| June | 55.1 °F | 74.6 °F | 3.65 in. |
| July | 60.3 °F | 79.2 °F | 3.38 in. |
| August | 58.7 °F | 78.3 °F | 3.67 in. |
| September | 50.6 °F | 71.3 °F | 3.74 in. |
| October | 39.5 °F | 58.2 °F | 5.03 in. |
| November | 29.2 °F | 45.6 °F | 4.1 in. |
| December | 18.4 °F | 33.9 °F | 3.94 in. |
| Annual | 36 °F | 54.8 °F | 43.53 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 5a : -20°F to -15°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 |