Champlain, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.1 °F (low) to 54.3 °F (high). Annual precipitation averages 39.5 Inches. Champlain 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 | 8.5 °F | 25.6 °F | 2.7 in. |
| February | 10.0 °F | 28.2 °F | 2.13 in. |
| March | 20.5 °F | 37.8 °F | 2.41 in. |
| April | 34.1 °F | 53.0 °F | 3.27 in. |
| May | 46.3 °F | 67.2 °F | 3.5 in. |
| June | 55.9 °F | 75.6 °F | 4.13 in. |
| July | 60.7 °F | 80.0 °F | 3.97 in. |
| August | 58.5 °F | 78.5 °F | 3.85 in. |
| September | 51.1 °F | 71.2 °F | 3.43 in. |
| October | 40.0 °F | 57.5 °F | 4.05 in. |
| November | 29.6 °F | 44.4 °F | 2.94 in. |
| December | 17.5 °F | 32.6 °F | 3.13 in. |
| Annual | 36.1 °F | 54.3 °F | 39.51 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 |