Meridian, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.7 °C (low) to 13.8 °C (high). Annual precipitation averages 1097.3 Millimeters. Meridian 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9 °C | -0.3 °C | 86.61 mm |
| February | -8.5 °C | 0.7 °C | 70.1 mm |
| March | -4.4 °C | 5.2 °C | 78.99 mm |
| April | 1.8 °C | 12.8 °C | 88.39 mm |
| May | 8.2 °C | 20.2 °C | 89.92 mm |
| June | 13.2 °C | 24.6 °C | 96.27 mm |
| July | 15.9 °C | 27.1 °C | 97.54 mm |
| August | 15.1 °C | 26.4 °C | 96.52 mm |
| September | 11.3 °C | 22.7 °C | 95 mm |
| October | 5.6 °C | 15.3 °C | 111.51 mm |
| November | 0.3 °C | 8.7 °C | 93.47 mm |
| December | -4.8 °C | 2.6 °C | 92.96 mm |
| Annual | 3.7 °C | 13.8 °C | 1097.28 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |