Orchard Hills, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.5 °F (low) to 61.2 °F (high). Annual precipitation averages 43.9 Inches. Orchard Hills 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.8 °F | 36.6 °F | 3.23 in. |
| February | 20.8 °F | 39.7 °F | 2.56 in. |
| March | 27.9 °F | 48.5 °F | 3.25 in. |
| April | 38.0 °F | 62.0 °F | 3.71 in. |
| May | 48.8 °F | 71.8 °F | 4.14 in. |
| June | 57.1 °F | 79.2 °F | 4.53 in. |
| July | 61.2 °F | 82.9 °F | 4.74 in. |
| August | 59.7 °F | 81.9 °F | 4.18 in. |
| September | 53.0 °F | 75.4 °F | 3.99 in. |
| October | 41.7 °F | 63.5 °F | 3.16 in. |
| November | 32.2 °F | 51.5 °F | 3.26 in. |
| December | 25.4 °F | 41.0 °F | 3.16 in. |
| Annual | 40.5 °F | 61.2 °F | 43.91 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°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 |