West Alexander, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.4 °F (low) to 61.2 °F (high). Annual precipitation averages 41.7 Inches. West Alexander 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.0 °F | 36.8 °F | 3.34 in. |
| February | 21.3 °F | 39.6 °F | 2.54 in. |
| March | 28.5 °F | 49.1 °F | 3.33 in. |
| April | 39.0 °F | 62.2 °F | 3.41 in. |
| May | 48.4 °F | 71.5 °F | 4.18 in. |
| June | 57.2 °F | 78.8 °F | 4.22 in. |
| July | 60.8 °F | 82.5 °F | 4.1 in. |
| August | 58.9 °F | 81.7 °F | 3.52 in. |
| September | 52.4 °F | 75.6 °F | 3.78 in. |
| October | 41.2 °F | 63.6 °F | 3.05 in. |
| November | 32.6 °F | 51.7 °F | 3.05 in. |
| December | 24.9 °F | 41.0 °F | 3.18 in. |
| Annual | 40.4 °F | 61.2 °F | 41.7 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |