Duquesne, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.7 °F (low) to 62.5 °F (high). Annual precipitation averages 41.2 Inches. Duquesne 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 | 22.0 °F | 38.0 °F | 3.17 in. |
| February | 23.2 °F | 40.5 °F | 2.45 in. |
| March | 29.9 °F | 49.8 °F | 3.35 in. |
| April | 39.9 °F | 63.2 °F | 3.39 in. |
| May | 50.5 °F | 72.9 °F | 3.82 in. |
| June | 59.4 °F | 80.7 °F | 4.44 in. |
| July | 63.6 °F | 84.8 °F | 4.26 in. |
| August | 62.4 °F | 83.4 °F | 3.7 in. |
| September | 55.4 °F | 76.9 °F | 3.48 in. |
| October | 44.0 °F | 64.7 °F | 3.11 in. |
| November | 34.3 °F | 52.6 °F | 2.95 in. |
| December | 27.2 °F | 42.2 °F | 3.08 in. |
| Annual | 42.7 °F | 62.5 °F | 41.2 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 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |