Mountain Top, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.7 °C (low) to 14.4 °C (high). Annual precipitation averages 1302.8 Millimeters. Mountain Top is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.2 °C | 0.7 °C | 97.03 mm |
| February | -7.4 °C | 2.3 °C | 71.12 mm |
| March | -3.4 °C | 6.8 °C | 98.04 mm |
| April | 2.3 °C | 14.2 °C | 108.46 mm |
| May | 8.2 °C | 20.2 °C | 109.22 mm |
| June | 12.9 °C | 24.6 °C | 133.35 mm |
| July | 15.4 °C | 26.9 °C | 116.59 mm |
| August | 14.3 °C | 25.9 °C | 119.63 mm |
| September | 10.6 °C | 22.2 °C | 129.03 mm |
| October | 4.8 °C | 15.7 °C | 123.44 mm |
| November | -0.4 °C | 9.2 °C | 94.49 mm |
| December | -4.9 °C | 3.5 °C | 102.36 mm |
| Annual | 3.7 °C | 14.4 °C | 1302.76 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| 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 |