Maryland, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.4 °C (low) to 12.9 °C (high). Annual precipitation averages 1168.4 Millimeters. Maryland 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11 °C | -0.8 °C | 81.53 mm |
| February | -10 °C | 0.4 °C | 66.55 mm |
| March | -6.3 °C | 4.8 °C | 87.88 mm |
| April | -0.7 °C | 12.3 °C | 101.35 mm |
| May | 5.3 °C | 19 °C | 96.77 mm |
| June | 10.6 °C | 22.9 °C | 117.86 mm |
| July | 13.2 °C | 25.4 °C | 116.59 mm |
| August | 12.2 °C | 24.8 °C | 112.52 mm |
| September | 9 °C | 21.2 °C | 101.35 mm |
| October | 3.2 °C | 14.3 °C | 106.68 mm |
| November | -2.2 °C | 8.1 °C | 88.9 mm |
| December | -6.7 °C | 1.8 °C | 90.42 mm |
| Annual | 1.4 °C | 12.9 °C | 1168.4 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |