Boothwyn, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 46.6 °F (low) to 63.6 °F (high). Annual precipitation averages 45.9 Inches. Boothwyn is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.4 °F | 40.3 °F | 3.54 in. |
| February | 26.5 °F | 42.7 °F | 2.87 in. |
| March | 33.6 °F | 50.6 °F | 4.28 in. |
| April | 44.2 °F | 62.7 °F | 3.59 in. |
| May | 53.7 °F | 72.1 °F | 3.66 in. |
| June | 63.2 °F | 81.3 °F | 4.49 in. |
| July | 68.7 °F | 85.7 °F | 4.69 in. |
| August | 67.0 °F | 84.0 °F | 4.26 in. |
| September | 60.1 °F | 77.7 °F | 4.11 in. |
| October | 48.0 °F | 65.9 °F | 3.64 in. |
| November | 37.9 °F | 54.9 °F | 2.85 in. |
| December | 30.6 °F | 45.1 °F | 3.87 in. |
| Annual | 46.6 °F | 63.6 °F | 45.85 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |