Mont Alto, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.2 °F (low) to 62.5 °F (high). Annual precipitation averages 44.8 Inches. Mont Alto is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.5 °F | 38.1 °F | 3.36 in. |
| February | 23.8 °F | 41.4 °F | 2.62 in. |
| March | 30.7 °F | 49.9 °F | 3.87 in. |
| April | 41.2 °F | 62.7 °F | 3.96 in. |
| May | 51.0 °F | 72.2 °F | 4.35 in. |
| June | 59.9 °F | 80.8 °F | 4.19 in. |
| July | 64.3 °F | 85.0 °F | 3.85 in. |
| August | 62.6 °F | 83.1 °F | 3.72 in. |
| September | 55.6 °F | 76.4 °F | 4.4 in. |
| October | 44.5 °F | 64.7 °F | 3.81 in. |
| November | 34.7 °F | 53.0 °F | 3.14 in. |
| December | 27.2 °F | 42.4 °F | 3.57 in. |
| Annual | 43.2 °F | 62.5 °F | 44.84 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |