Rome, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.2 °F (low) to 58.7 °F (high). Annual precipitation averages 38.1 Inches. Rome 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.7 °F | 33.1 °F | 2.19 in. |
| February | 16.3 °F | 35.5 °F | 1.82 in. |
| March | 23.4 °F | 44.2 °F | 2.75 in. |
| April | 33.7 °F | 57.9 °F | 3.45 in. |
| May | 45.0 °F | 70.0 °F | 3.39 in. |
| June | 54.2 °F | 78.3 °F | 4.19 in. |
| July | 58.5 °F | 82.4 °F | 3.6 in. |
| August | 57.3 °F | 81.1 °F | 3.79 in. |
| September | 50.2 °F | 74.0 °F | 3.86 in. |
| October | 39.0 °F | 61.3 °F | 3.52 in. |
| November | 29.9 °F | 48.4 °F | 2.79 in. |
| December | 22.6 °F | 38.1 °F | 2.7 in. |
| Annual | 37.2 °F | 58.7 °F | 38.05 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |