Philmont, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.6 °C (low) to 15.3 °C (high). Annual precipitation averages 1106.9 Millimeters. Philmont is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.2 °C | 0.8 °C | 73.91 mm |
| February | -8.3 °C | 2.6 °C | 61.98 mm |
| March | -3.8 °C | 7.4 °C | 80.01 mm |
| April | 2.2 °C | 15.4 °C | 85.09 mm |
| May | 8.2 °C | 21.8 °C | 91.44 mm |
| June | 13.2 °C | 25.9 °C | 110.24 mm |
| July | 15.9 °C | 28.6 °C | 107.44 mm |
| August | 15.1 °C | 27.5 °C | 108.97 mm |
| September | 10.7 °C | 23.4 °C | 111.25 mm |
| October | 4.6 °C | 16.6 °C | 109.98 mm |
| November | -0.4 °C | 9.8 °C | 75.44 mm |
| December | -5.2 °C | 3.6 °C | 91.19 mm |
| Annual | 3.6 °C | 15.3 °C | 1106.94 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |