Blasdell, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.7 °C (low) to 13.4 °C (high). Annual precipitation averages 1065 Millimeters. Blasdell 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 | -7.3 °C | 0.2 °C | 85.85 mm |
| February | -7.3 °C | 0.8 °C | 62.48 mm |
| March | -3.7 °C | 5 °C | 75.69 mm |
| April | 2.1 °C | 11.5 °C | 78.99 mm |
| May | 8.5 °C | 18.3 °C | 89.92 mm |
| June | 14 °C | 23.2 °C | 98.3 mm |
| July | 16.8 °C | 25.8 °C | 89.92 mm |
| August | 16.2 °C | 25.6 °C | 81.79 mm |
| September | 12.5 °C | 22.3 °C | 105.66 mm |
| October | 6.7 °C | 15.5 °C | 109.73 mm |
| November | 1.4 °C | 8.9 °C | 91.44 mm |
| December | -3.4 °C | 3.3 °C | 95.25 mm |
| Annual | 4.7 °C | 13.4 °C | 1065.02 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |