Arkport, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2 °C (low) to 14 °C (high). Annual precipitation averages 945.1 Millimeters. Arkport 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.8 °C | -0.1 °C | 58.67 mm |
| February | -9.6 °C | 1.2 °C | 47.24 mm |
| March | -5.8 °C | 5.7 °C | 64.77 mm |
| April | 0.1 °C | 13.2 °C | 80.01 mm |
| May | 6.2 °C | 20.2 °C | 84.84 mm |
| June | 11.2 °C | 24.9 °C | 99.57 mm |
| July | 13.6 °C | 27.2 °C | 96.27 mm |
| August | 12.7 °C | 26.4 °C | 94.49 mm |
| September | 9.1 °C | 22.6 °C | 95 mm |
| October | 3.5 °C | 15.4 °C | 90.68 mm |
| November | -1.6 °C | 8.4 °C | 68.07 mm |
| December | -6 °C | 2.7 °C | 65.53 mm |
| Annual | 2 °C | 14 °C | 945.14 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| 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 |