Rockwood, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.8 °C (low) to 14.8 °C (high). Annual precipitation averages 1173 Millimeters. Rockwood is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.4 °C | 1.4 °C | 91.19 mm |
| February | -7.7 °C | 3 °C | 82.3 mm |
| March | -4.1 °C | 7.7 °C | 100.84 mm |
| April | 1.7 °C | 15.1 °C | 102.62 mm |
| May | 7.2 °C | 20.4 °C | 119.38 mm |
| June | 11.9 °C | 24.6 °C | 115.32 mm |
| July | 14.1 °C | 26.7 °C | 106.17 mm |
| August | 13.2 °C | 26.1 °C | 99.82 mm |
| September | 9.2 °C | 22.6 °C | 97.28 mm |
| October | 3.3 °C | 16.2 °C | 83.31 mm |
| November | -1.8 °C | 9.4 °C | 81.03 mm |
| December | -5.5 °C | 3.8 °C | 93.73 mm |
| Annual | 2.8 °C | 14.8 °C | 1172.99 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |