Franklintown, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.2 °F (low) to 62.4 °F (high). Annual precipitation averages 45.8 Inches. Franklintown 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 | 22.1 °F | 38.3 °F | 3.27 in. |
| February | 23.2 °F | 40.9 °F | 2.72 in. |
| March | 30.6 °F | 49.6 °F | 4.0 in. |
| April | 41.3 °F | 62.0 °F | 3.67 in. |
| May | 51.1 °F | 71.7 °F | 4.2 in. |
| June | 60.3 °F | 80.5 °F | 4.06 in. |
| July | 64.8 °F | 85.6 °F | 4.15 in. |
| August | 63.0 °F | 83.5 °F | 3.89 in. |
| September | 55.7 °F | 76.4 °F | 4.96 in. |
| October | 44.4 °F | 64.7 °F | 4.03 in. |
| November | 34.4 °F | 53.5 °F | 3.25 in. |
| December | 26.9 °F | 42.3 °F | 3.59 in. |
| Annual | 43.2 °F | 62.4 °F | 45.79 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |