Blanchard, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.1 °C (low) to 16.2 °C (high). Annual precipitation averages 1042.2 Millimeters. Blanchard 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 | -7.5 °C | 1.8 °C | 74.42 mm |
| February | -7 °C | 3.7 °C | 57.66 mm |
| March | -3 °C | 8.9 °C | 82.04 mm |
| April | 2.6 °C | 16.6 °C | 91.19 mm |
| May | 8.4 °C | 22.6 °C | 97.28 mm |
| June | 13.5 °C | 26.8 °C | 97.79 mm |
| July | 15.9 °C | 29.2 °C | 98.04 mm |
| August | 15.2 °C | 28.1 °C | 93.73 mm |
| September | 11.1 °C | 24.2 °C | 101.85 mm |
| October | 4.7 °C | 17.5 °C | 93.98 mm |
| November | -0.6 °C | 10.3 °C | 76.2 mm |
| December | -4.4 °C | 4.2 °C | 77.98 mm |
| Annual | 4.1 °C | 16.2 °C | 1042.16 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 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |