Rouseville, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.1 °F (low) to 59.5 °F (high). Annual precipitation averages 46.7 Inches. Rouseville 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 | 17.3 °F | 34.1 °F | 3.4 in. |
| February | 17.8 °F | 36.9 °F | 2.57 in. |
| March | 24.9 °F | 46.0 °F | 3.48 in. |
| April | 34.9 °F | 59.4 °F | 4.13 in. |
| May | 45.6 °F | 70.9 °F | 4.04 in. |
| June | 54.9 °F | 78.5 °F | 5.1 in. |
| July | 58.9 °F | 82.4 °F | 4.96 in. |
| August | 57.7 °F | 81.1 °F | 4.06 in. |
| September | 50.9 °F | 74.4 °F | 4.1 in. |
| October | 40.0 °F | 62.1 °F | 3.79 in. |
| November | 30.9 °F | 49.5 °F | 3.52 in. |
| December | 23.5 °F | 38.6 °F | 3.59 in. |
| Annual | 38.1 °F | 59.5 °F | 46.74 in. |
| 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 : -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 |