Shamokin Dam, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.7 °F (low) to 61.2 °F (high). Annual precipitation averages 44.4 Inches. Shamokin Dam 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.5 °F | 35.8 °F | 3.17 in. |
| February | 20.7 °F | 38.8 °F | 2.36 in. |
| March | 28.1 °F | 48.1 °F | 3.29 in. |
| April | 38.1 °F | 61.3 °F | 3.78 in. |
| May | 48.7 °F | 71.7 °F | 3.79 in. |
| June | 58.1 °F | 80.0 °F | 4.25 in. |
| July | 62.1 °F | 84.4 °F | 4.37 in. |
| August | 60.4 °F | 82.5 °F | 4.07 in. |
| September | 53.0 °F | 75.9 °F | 4.71 in. |
| October | 41.8 °F | 63.5 °F | 4.1 in. |
| November | 32.2 °F | 51.5 °F | 3.06 in. |
| December | 25.1 °F | 40.4 °F | 3.4 in. |
| Annual | 40.7 °F | 61.2 °F | 44.35 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |