Port Carbon, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.5 °F (low) to 61.2 °F (high). Annual precipitation averages 51.4 Inches. Port Carbon 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 | 18.6 °F | 36.6 °F | 3.58 in. |
| February | 19.8 °F | 39.5 °F | 2.79 in. |
| March | 27.5 °F | 47.9 °F | 4.01 in. |
| April | 37.5 °F | 60.7 °F | 4.35 in. |
| May | 47.1 °F | 71.1 °F | 4.27 in. |
| June | 56.3 °F | 79.3 °F | 4.95 in. |
| July | 60.7 °F | 84.1 °F | 4.86 in. |
| August | 58.8 °F | 82.4 °F | 4.37 in. |
| September | 51.6 °F | 75.5 °F | 5.21 in. |
| October | 40.3 °F | 63.8 °F | 4.91 in. |
| November | 31.4 °F | 51.7 °F | 3.9 in. |
| December | 24.2 °F | 41.3 °F | 4.15 in. |
| Annual | 39.5 °F | 61.2 °F | 51.35 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |