Glenside, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 8 °C (low) to 17.7 °C (high). Annual precipitation averages 1221.5 Millimeters. Glenside is located in USDA Plant Hardiness Zone 7b. 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 | -3.7 °C | 4.7 °C | 87.88 mm |
| February | -2.9 °C | 6.2 °C | 70.36 mm |
| March | 0.9 °C | 10.6 °C | 107.95 mm |
| April | 6.4 °C | 17.2 °C | 94.74 mm |
| May | 11.8 °C | 22.6 °C | 102.87 mm |
| June | 17.2 °C | 27.6 °C | 111 mm |
| July | 20.2 °C | 30.1 °C | 117.35 mm |
| August | 19.3 °C | 29.2 °C | 125.98 mm |
| September | 15.3 °C | 25.6 °C | 112.01 mm |
| October | 8.8 °C | 18.9 °C | 98.81 mm |
| November | 3.2 °C | 12.8 °C | 81.79 mm |
| December | -0.8 °C | 7.3 °C | 110.74 mm |
| Annual | 8 °C | 17.7 °C | 1221.48 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |