Avondale, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.5 °F (low) to 63.5 °F (high). Annual precipitation averages 48.3 Inches. Avondale 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 | 22.7 °F | 40.2 °F | 3.44 in. |
| February | 23.4 °F | 42.2 °F | 2.85 in. |
| March | 30.7 °F | 50.7 °F | 4.33 in. |
| April | 41.2 °F | 62.7 °F | 3.8 in. |
| May | 51.1 °F | 72.4 °F | 3.93 in. |
| June | 60.1 °F | 81.2 °F | 4.44 in. |
| July | 65.4 °F | 85.6 °F | 5.1 in. |
| August | 63.8 °F | 84.1 °F | 4.24 in. |
| September | 56.4 °F | 77.7 °F | 4.7 in. |
| October | 44.3 °F | 66.1 °F | 4.37 in. |
| November | 34.7 °F | 54.2 °F | 3.33 in. |
| December | 27.8 °F | 44.3 °F | 3.78 in. |
| Annual | 43.5 °F | 63.5 °F | 48.31 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |