Bath, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.2 °C (low) to 14.4 °C (high). Annual precipitation averages 835.9 Millimeters. Bath 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.8 °C | 0.1 °C | 53.85 mm |
| February | -9.3 °C | 1.5 °C | 40.39 mm |
| March | -5.6 °C | 6.1 °C | 56.13 mm |
| April | 0.2 °C | 13.7 °C | 71.37 mm |
| May | 6.3 °C | 20.6 °C | 75.44 mm |
| June | 11.6 °C | 25.3 °C | 83.82 mm |
| July | 13.9 °C | 27.7 °C | 81.03 mm |
| August | 13.1 °C | 26.8 °C | 83.06 mm |
| September | 9.3 °C | 22.9 °C | 94.49 mm |
| October | 3.7 °C | 16 °C | 75.69 mm |
| November | -1.6 °C | 8.7 °C | 61.98 mm |
| December | -6 °C | 2.8 °C | 58.67 mm |
| Annual | 2.2 °C | 14.4 °C | 835.92 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |