Berlin, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36 °F (low) to 56.8 °F (high). Annual precipitation averages 44.2 Inches. Berlin is located in USDA Plant Hardiness Zone 5b. 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 | 14.9 °F | 33.1 °F | 3.33 in. |
| February | 16.1 °F | 36.1 °F | 2.97 in. |
| March | 22.9 °F | 44.6 °F | 3.77 in. |
| April | 34.3 °F | 57.2 °F | 3.86 in. |
| May | 44.3 °F | 66.8 °F | 4.65 in. |
| June | 52.5 °F | 74.4 °F | 4.58 in. |
| July | 56.5 °F | 78.2 °F | 4.02 in. |
| August | 54.9 °F | 77.0 °F | 3.82 in. |
| September | 47.5 °F | 70.6 °F | 3.66 in. |
| October | 37.7 °F | 59.1 °F | 3.21 in. |
| November | 28.3 °F | 47.4 °F | 2.94 in. |
| December | 21.7 °F | 37.2 °F | 3.41 in. |
| Annual | 36 °F | 56.8 °F | 44.22 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 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |