Belmont, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.3 °F (low) to 59.1 °F (high). Annual precipitation averages 46.7 Inches. Belmont 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 | 18.5 °F | 34.5 °F | 3.2 in. |
| February | 20.0 °F | 37.4 °F | 3.11 in. |
| March | 26.5 °F | 45.9 °F | 3.81 in. |
| April | 37.5 °F | 60.0 °F | 4.08 in. |
| May | 47.4 °F | 69.8 °F | 4.33 in. |
| June | 55.9 °F | 77.3 °F | 4.57 in. |
| July | 59.8 °F | 81.2 °F | 4.45 in. |
| August | 58.3 °F | 79.8 °F | 4.47 in. |
| September | 51.6 °F | 73.4 °F | 4.15 in. |
| October | 40.7 °F | 61.8 °F | 3.5 in. |
| November | 31.0 °F | 49.5 °F | 3.34 in. |
| December | 24.1 °F | 38.9 °F | 3.71 in. |
| Annual | 39.3 °F | 59.1 °F | 46.72 in. |
| 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 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |