Ticonderoga, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.4 °C (low) to 13.7 °C (high). Annual precipitation averages 945.6 Millimeters. Ticonderoga 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 | -11.4 °C | -1.3 °C | 66.04 mm |
| February | -11 °C | -0.1 °C | 52.83 mm |
| March | -5.4 °C | 4.8 °C | 71.63 mm |
| April | 0.8 °C | 13.5 °C | 74.17 mm |
| May | 7.6 °C | 19.7 °C | 82.3 mm |
| June | 12.8 °C | 25.4 °C | 90.17 mm |
| July | 15.4 °C | 28.1 °C | 95.5 mm |
| August | 14.7 °C | 27.2 °C | 87.88 mm |
| September | 10.2 °C | 23.1 °C | 80.01 mm |
| October | 3.8 °C | 14.8 °C | 96.27 mm |
| November | -1.1 °C | 7.8 °C | 70.61 mm |
| December | -7.1 °C | 1.5 °C | 78.23 mm |
| Annual | 2.4 °C | 13.7 °C | 945.64 mm |
| 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 : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |