Langhorne Manor, Pennsylvania has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.3 °F (low) to 64 °F (high). Annual precipitation averages 48.7 Inches. Langhorne Manor 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.2 °F | 40.4 °F | 3.53 in. |
| February | 25.6 °F | 43.1 °F | 2.82 in. |
| March | 32.7 °F | 51.0 °F | 4.42 in. |
| April | 42.7 °F | 63.1 °F | 3.65 in. |
| May | 52.6 °F | 72.6 °F | 4.21 in. |
| June | 62.0 °F | 81.7 °F | 4.35 in. |
| July | 67.4 °F | 86.4 °F | 4.82 in. |
| August | 65.6 °F | 84.6 °F | 4.98 in. |
| September | 58.3 °F | 78.2 °F | 4.18 in. |
| October | 46.5 °F | 66.1 °F | 4.01 in. |
| November | 36.6 °F | 55.2 °F | 3.29 in. |
| December | 29.2 °F | 45.2 °F | 4.43 in. |
| Annual | 45.3 °F | 64 °F | 48.69 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |