Hiller, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5 °C (low) to 16.8 °C (high). Annual precipitation averages 1086.4 Millimeters. Hiller is located in USDA Plant Hardiness Zone 6b. 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 | -6.2 °C | 3.3 °C | 80.26 mm |
| February | -5.6 °C | 4.8 °C | 70.61 mm |
| March | -1.8 °C | 10.1 °C | 89.92 mm |
| April | 3.5 °C | 17.3 °C | 89.41 mm |
| May | 9.3 °C | 22.5 °C | 108.97 mm |
| June | 14.2 °C | 26.7 °C | 113.28 mm |
| July | 16.6 °C | 28.8 °C | 112.01 mm |
| August | 15.9 °C | 28.3 °C | 94.74 mm |
| September | 11.9 °C | 24.9 °C | 88.14 mm |
| October | 5.6 °C | 18.2 °C | 75.95 mm |
| November | 0.3 °C | 11.4 °C | 80.52 mm |
| December | -3.4 °C | 5.6 °C | 82.55 mm |
| Annual | 5 °C | 16.8 °C | 1086.36 mm |
| 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |