Hamburg, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4 °C (low) to 13.7 °C (high). Annual precipitation averages 1115.1 Millimeters. Hamburg is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.9 °C | 0.2 °C | 92.71 mm |
| February | -7.9 °C | 1.1 °C | 66.29 mm |
| March | -4.3 °C | 5.6 °C | 80.52 mm |
| April | 1.4 °C | 12.5 °C | 81.79 mm |
| May | 7.8 °C | 19.2 °C | 92.46 mm |
| June | 13.3 °C | 23.9 °C | 93.47 mm |
| July | 16.2 °C | 26.3 °C | 98.04 mm |
| August | 15.5 °C | 25.9 °C | 90.17 mm |
| September | 11.9 °C | 22.4 °C | 106.68 mm |
| October | 5.9 °C | 15.5 °C | 115.57 mm |
| November | 0.8 °C | 8.9 °C | 99.57 mm |
| December | -4.2 °C | 3.2 °C | 97.79 mm |
| Annual | 4 °C | 13.7 °C | 1115.06 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |