Wernersville, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.4 °F (low) to 62.6 °F (high). Annual precipitation averages 49.2 Inches. Wernersville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.2 °F | 38.3 °F | 3.46 in. |
| February | 23.3 °F | 40.8 °F | 2.71 in. |
| March | 30.8 °F | 49.6 °F | 4.02 in. |
| April | 40.9 °F | 62.4 °F | 3.87 in. |
| May | 51.0 °F | 72.0 °F | 3.97 in. |
| June | 60.5 °F | 80.9 °F | 4.98 in. |
| July | 65.2 °F | 85.4 °F | 4.96 in. |
| August | 63.4 °F | 83.6 °F | 4.41 in. |
| September | 56.3 °F | 77.0 °F | 5.02 in. |
| October | 44.7 °F | 65.1 °F | 4.38 in. |
| November | 34.8 °F | 53.5 °F | 3.45 in. |
| December | 27.4 °F | 43.1 °F | 3.97 in. |
| Annual | 43.4 °F | 62.6 °F | 49.2 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |