Blandburg, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.6 °C (low) to 13.5 °C (high). Annual precipitation averages 1159.2 Millimeters. Blandburg is located in USDA Plant Hardiness Zone 6a. 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 | -9.1 °C | -0.6 °C | 81.53 mm |
| February | -8.6 °C | 1 °C | 61.21 mm |
| March | -4.6 °C | 5.9 °C | 86.87 mm |
| April | 1.3 °C | 13.9 °C | 101.09 mm |
| May | 7.2 °C | 19.7 °C | 109.98 mm |
| June | 11.9 °C | 23.9 °C | 115.82 mm |
| July | 14.1 °C | 26.1 °C | 113.79 mm |
| August | 13.1 °C | 25.3 °C | 108.2 mm |
| September | 9.5 °C | 21.7 °C | 107.95 mm |
| October | 3.8 °C | 15.1 °C | 96.52 mm |
| November | -1.4 °C | 7.8 °C | 87.38 mm |
| December | -5.9 °C | 1.7 °C | 88.9 mm |
| Annual | 2.6 °C | 13.5 °C | 1159.24 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 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 |