Cassadaga, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.6 °F (low) to 56.1 °F (high). Annual precipitation averages 49.4 Inches. Cassadaga 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.3 °F | 31.0 °F | 4.19 in. |
| February | 16.2 °F | 33.0 °F | 2.79 in. |
| March | 23.0 °F | 41.7 °F | 3.41 in. |
| April | 33.9 °F | 55.1 °F | 4.01 in. |
| May | 45.2 °F | 66.9 °F | 4.02 in. |
| June | 54.4 °F | 75.1 °F | 4.04 in. |
| July | 58.7 °F | 78.8 °F | 4.83 in. |
| August | 57.5 °F | 77.6 °F | 3.9 in. |
| September | 50.8 °F | 71.5 °F | 4.57 in. |
| October | 40.5 °F | 59.2 °F | 4.93 in. |
| November | 31.2 °F | 46.9 °F | 4.17 in. |
| December | 23.3 °F | 36.2 °F | 4.53 in. |
| Annual | 37.6 °F | 56.1 °F | 49.39 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |