West Conshohocken, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.8 °F (low) to 64.5 °F (high). Annual precipitation averages 48.1 Inches. West Conshohocken 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.8 °F | 40.6 °F | 3.48 in. |
| February | 26.1 °F | 43.3 °F | 2.87 in. |
| March | 33.0 °F | 51.6 °F | 4.31 in. |
| April | 43.1 °F | 63.8 °F | 3.7 in. |
| May | 52.8 °F | 73.4 °F | 4.08 in. |
| June | 62.6 °F | 82.4 °F | 4.39 in. |
| July | 67.9 °F | 86.9 °F | 4.45 in. |
| August | 66.2 °F | 85.3 °F | 4.86 in. |
| September | 59.0 °F | 78.8 °F | 4.42 in. |
| October | 47.2 °F | 66.5 °F | 3.94 in. |
| November | 37.2 °F | 55.4 °F | 3.21 in. |
| December | 30.1 °F | 45.5 °F | 4.39 in. |
| Annual | 45.8 °F | 64.5 °F | 48.1 in. |
| 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 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |