Crafton, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.9 °F (low) to 62.2 °F (high). Annual precipitation averages 40.7 Inches. Crafton is located in USDA Plant Hardiness Zone 6b. 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 | 22.0 °F | 37.6 °F | 3.21 in. |
| February | 23.4 °F | 40.1 °F | 2.57 in. |
| March | 30.3 °F | 49.4 °F | 3.2 in. |
| April | 40.4 °F | 62.9 °F | 3.44 in. |
| May | 50.8 °F | 72.4 °F | 3.89 in. |
| June | 59.6 °F | 80.6 °F | 4.16 in. |
| July | 63.8 °F | 84.5 °F | 4.23 in. |
| August | 62.6 °F | 83.2 °F | 3.4 in. |
| September | 55.7 °F | 76.7 °F | 3.53 in. |
| October | 44.2 °F | 64.4 °F | 3.0 in. |
| November | 34.6 °F | 52.1 °F | 2.93 in. |
| December | 27.3 °F | 41.9 °F | 3.17 in. |
| Annual | 42.9 °F | 62.2 °F | 40.73 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 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 |