Patterson, New York has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.5 °C (low) to 15.4 °C (high). Annual precipitation averages 1275.1 Millimeters. Patterson is located in USDA Plant Hardiness Zone 6b. 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 | -7.8 °C | 1.8 °C | 96.27 mm |
| February | -6.8 °C | 3.6 °C | 71.12 mm |
| March | -2.9 °C | 7.9 °C | 99.57 mm |
| April | 3.2 °C | 15.1 °C | 96.77 mm |
| May | 8.7 °C | 20.8 °C | 91.44 mm |
| June | 13.8 °C | 25.2 °C | 113.28 mm |
| July | 16.7 °C | 28.1 °C | 116.84 mm |
| August | 16 °C | 27.1 °C | 134.62 mm |
| September | 11.9 °C | 23.2 °C | 122.17 mm |
| October | 5.4 °C | 16.7 °C | 120.65 mm |
| November | 0.2 °C | 10.4 °C | 102.36 mm |
| December | -4.3 °C | 4.6 °C | 109.98 mm |
| Annual | 4.5 °C | 15.4 °C | 1275.07 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |