Newry, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.5 °C (low) to 16 °C (high). Annual precipitation averages 1029.7 Millimeters. Newry 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 | -6.9 °C | 2.3 °C | 70.1 mm |
| February | -6.3 °C | 4.1 °C | 59.94 mm |
| March | -2.6 °C | 8.8 °C | 83.06 mm |
| April | 3.2 °C | 16.2 °C | 87.12 mm |
| May | 8.9 °C | 21.7 °C | 102.87 mm |
| June | 13.8 °C | 26.2 °C | 97.54 mm |
| July | 16.2 °C | 28.6 °C | 89.66 mm |
| August | 15.3 °C | 27.8 °C | 91.44 mm |
| September | 11.4 °C | 23.8 °C | 102.11 mm |
| October | 5.2 °C | 17.3 °C | 87.63 mm |
| November | -0.2 °C | 10.7 °C | 78.74 mm |
| December | -4.1 °C | 4.7 °C | 79.5 mm |
| Annual | 4.5 °C | 16 °C | 1029.71 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |