Dillsburg, 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 62.7 °F (high). Annual precipitation averages 45.7 Inches. Dillsburg 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 | 22.4 °F | 38.4 °F | 3.29 in. |
| February | 23.4 °F | 41.2 °F | 2.72 in. |
| March | 30.9 °F | 49.9 °F | 3.95 in. |
| April | 41.3 °F | 62.3 °F | 3.67 in. |
| May | 51.3 °F | 72.1 °F | 4.22 in. |
| June | 60.5 °F | 80.9 °F | 4.08 in. |
| July | 65.0 °F | 85.8 °F | 4.2 in. |
| August | 63.2 °F | 83.7 °F | 3.87 in. |
| September | 55.9 °F | 76.8 °F | 4.88 in. |
| October | 44.6 °F | 64.9 °F | 4.03 in. |
| November | 34.7 °F | 53.6 °F | 3.25 in. |
| December | 27.1 °F | 42.5 °F | 3.57 in. |
| Annual | 43.4 °F | 62.7 °F | 45.73 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 | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |