Scranton, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.6 °F (low) to 60.1 °F (high). Annual precipitation averages 40.3 Inches. Scranton 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 | 18.1 °F | 34.4 °F | 2.48 in. |
| February | 18.9 °F | 37.1 °F | 2.0 in. |
| March | 26.6 °F | 45.8 °F | 2.73 in. |
| April | 37.1 °F | 59.6 °F | 3.5 in. |
| May | 47.7 °F | 71.0 °F | 3.66 in. |
| June | 56.6 °F | 79.1 °F | 4.87 in. |
| July | 60.9 °F | 83.8 °F | 4.3 in. |
| August | 59.2 °F | 81.9 °F | 4.41 in. |
| September | 52.2 °F | 75.0 °F | 3.33 in. |
| October | 41.2 °F | 62.5 °F | 3.75 in. |
| November | 32.4 °F | 50.7 °F | 2.53 in. |
| December | 24.5 °F | 39.8 °F | 2.73 in. |
| Annual | 39.6 °F | 60.1 °F | 40.29 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |