Roseville, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.6 °F (low) to 57.3 °F (high). Annual precipitation averages 38.8 Inches. Roseville is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.0 °F | 31.7 °F | 2.55 in. |
| February | 14.7 °F | 34.6 °F | 1.97 in. |
| March | 21.6 °F | 42.9 °F | 2.85 in. |
| April | 32.2 °F | 57.0 °F | 3.33 in. |
| May | 43.4 °F | 69.0 °F | 3.36 in. |
| June | 52.4 °F | 76.8 °F | 4.03 in. |
| July | 56.6 °F | 80.8 °F | 3.83 in. |
| August | 55.4 °F | 79.4 °F | 3.66 in. |
| September | 48.4 °F | 72.6 °F | 4.13 in. |
| October | 37.9 °F | 60.1 °F | 3.58 in. |
| November | 29.0 °F | 46.7 °F | 2.79 in. |
| December | 21.1 °F | 36.4 °F | 2.72 in. |
| Annual | 35.6 °F | 57.3 °F | 38.8 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 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 | Dfb - Humid Continental Mild Summer, Wet All Year |