Rouzerville, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.7 °F (low) to 63.4 °F (high). Annual precipitation averages 43.9 Inches. Rouzerville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.3 °F | 39.3 °F | 3.23 in. |
| February | 24.5 °F | 42.7 °F | 2.5 in. |
| March | 31.6 °F | 51.1 °F | 3.71 in. |
| April | 41.7 °F | 63.8 °F | 3.89 in. |
| May | 51.4 °F | 72.8 °F | 4.26 in. |
| June | 60.3 °F | 81.5 °F | 3.97 in. |
| July | 64.6 °F | 85.7 °F | 3.93 in. |
| August | 62.9 °F | 84.0 °F | 3.66 in. |
| September | 56.0 °F | 77.3 °F | 4.3 in. |
| October | 44.9 °F | 65.7 °F | 3.73 in. |
| November | 35.0 °F | 53.9 °F | 3.18 in. |
| December | 27.7 °F | 43.3 °F | 3.5 in. |
| Annual | 43.7 °F | 63.4 °F | 43.86 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |