Atwood, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.2 °F (low) to 60.1 °F (high). Annual precipitation averages 45.3 Inches. Atwood is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.6 °F | 35.2 °F | 3.47 in. |
| February | 19.5 °F | 38.2 °F | 2.63 in. |
| March | 26.3 °F | 47.3 °F | 3.47 in. |
| April | 36.4 °F | 61.0 °F | 3.82 in. |
| May | 47.1 °F | 71.2 °F | 3.92 in. |
| June | 55.9 °F | 78.4 °F | 4.57 in. |
| July | 59.8 °F | 82.1 °F | 4.68 in. |
| August | 58.6 °F | 81.1 °F | 4.19 in. |
| September | 51.8 °F | 74.7 °F | 4.24 in. |
| October | 40.7 °F | 62.6 °F | 3.28 in. |
| November | 31.3 °F | 50.2 °F | 3.52 in. |
| December | 24.2 °F | 39.4 °F | 3.46 in. |
| Annual | 39.2 °F | 60.1 °F | 45.25 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°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 |