Gibraltar, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7 °C (low) to 17.4 °C (high). Annual precipitation averages 1239 Millimeters. Gibraltar 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5 °C | 3.7 °C | 88.14 mm |
| February | -4.2 °C | 5.2 °C | 71.37 mm |
| March | 0.1 °C | 10.1 °C | 101.35 mm |
| April | 5.7 °C | 17.6 °C | 95.5 mm |
| May | 11.3 °C | 22.6 °C | 97.28 mm |
| June | 16.4 °C | 27.7 °C | 122.94 mm |
| July | 19.2 °C | 30.2 °C | 125.48 mm |
| August | 18.2 °C | 29.1 °C | 109.47 mm |
| September | 14.2 °C | 25.5 °C | 127.25 mm |
| October | 7.7 °C | 18.9 °C | 112.27 mm |
| November | 1.9 °C | 12.2 °C | 86.11 mm |
| December | -1.8 °C | 6.4 °C | 101.85 mm |
| Annual | 7 °C | 17.4 °C | 1239.01 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |