Berne, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.7 °F (low) to 56.9 °F (high). Annual precipitation averages 40.2 Inches. Berne 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.5 °F | 31.1 °F | 2.74 in. |
| February | 12.7 °F | 33.7 °F | 2.08 in. |
| March | 20.2 °F | 41.3 °F | 2.95 in. |
| April | 31.7 °F | 56.0 °F | 3.15 in. |
| May | 43.2 °F | 68.3 °F | 3.43 in. |
| June | 52.3 °F | 76.3 °F | 4.16 in. |
| July | 57.0 °F | 80.9 °F | 3.65 in. |
| August | 55.4 °F | 79.4 °F | 3.77 in. |
| September | 47.7 °F | 72.6 °F | 3.83 in. |
| October | 37.1 °F | 59.8 °F | 4.14 in. |
| November | 28.2 °F | 47.1 °F | 3.03 in. |
| December | 19.0 °F | 36.5 °F | 3.27 in. |
| Annual | 34.7 °F | 56.9 °F | 40.2 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |