Masthope, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.8 °F (low) to 59.3 °F (high). Annual precipitation averages 44.6 Inches. Masthope 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.8 °F | 33.8 °F | 3.19 in. |
| February | 16.0 °F | 36.8 °F | 2.24 in. |
| March | 23.7 °F | 45.4 °F | 3.33 in. |
| April | 33.9 °F | 59.0 °F | 3.72 in. |
| May | 44.6 °F | 70.3 °F | 3.74 in. |
| June | 54.2 °F | 78.0 °F | 4.81 in. |
| July | 58.8 °F | 82.6 °F | 4.08 in. |
| August | 57.2 °F | 80.8 °F | 4.09 in. |
| September | 50.0 °F | 74.0 °F | 4.32 in. |
| October | 38.4 °F | 62.1 °F | 4.24 in. |
| November | 29.1 °F | 49.9 °F | 3.14 in. |
| December | 21.3 °F | 38.6 °F | 3.71 in. |
| Annual | 36.8 °F | 59.3 °F | 44.61 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |