Mahopac, New York has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.7 °C (low) to 15.5 °C (high). Annual precipitation averages 1284 Millimeters. Mahopac is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.6 °C | 1.9 °C | 98.55 mm |
| February | -6.6 °C | 3.7 °C | 69.85 mm |
| March | -2.7 °C | 8.1 °C | 102.36 mm |
| April | 3.3 °C | 15.2 °C | 97.54 mm |
| May | 8.8 °C | 20.9 °C | 90.17 mm |
| June | 13.9 °C | 25.3 °C | 114.05 mm |
| July | 16.8 °C | 28.1 °C | 118.87 mm |
| August | 16.1 °C | 27.2 °C | 133.6 mm |
| September | 11.9 °C | 23.3 °C | 122.94 mm |
| October | 5.7 °C | 16.8 °C | 121.41 mm |
| November | 0.4 °C | 10.6 °C | 104.65 mm |
| December | -4 °C | 4.6 °C | 109.98 mm |
| Annual | 4.7 °C | 15.5 °C | 1283.97 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |