Allenwood, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.8 °F (low) to 61.3 °F (high). Annual precipitation averages 45.6 Inches. Allenwood is located in USDA Plant Hardiness Zone 6b. 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 | 19.5 °F | 35.6 °F | 3.35 in. |
| February | 20.7 °F | 38.7 °F | 2.61 in. |
| March | 28.2 °F | 48.2 °F | 3.72 in. |
| April | 38.3 °F | 61.7 °F | 4.16 in. |
| May | 48.8 °F | 72.3 °F | 4.1 in. |
| June | 58.0 °F | 80.3 °F | 3.94 in. |
| July | 62.3 °F | 84.8 °F | 4.67 in. |
| August | 60.8 °F | 82.9 °F | 3.66 in. |
| September | 53.3 °F | 76.0 °F | 4.21 in. |
| October | 42.1 °F | 63.6 °F | 3.69 in. |
| November | 32.5 °F | 51.3 °F | 3.52 in. |
| December | 25.3 °F | 40.2 °F | 3.94 in. |
| Annual | 40.8 °F | 61.3 °F | 45.57 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |