Pittsburgh, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.8 °F (low) to 62.6 °F (high). Annual precipitation averages 40.7 Inches. Pittsburgh 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.9 °F | 38.1 °F | 3.21 in. |
| February | 24.2 °F | 40.5 °F | 2.53 in. |
| March | 31.0 °F | 49.7 °F | 3.22 in. |
| April | 41.1 °F | 63.3 °F | 3.4 in. |
| May | 51.6 °F | 73.0 °F | 3.88 in. |
| June | 60.5 °F | 81.1 °F | 4.18 in. |
| July | 64.8 °F | 85.1 °F | 4.19 in. |
| August | 63.6 °F | 83.7 °F | 3.4 in. |
| September | 56.7 °F | 77.2 °F | 3.53 in. |
| October | 45.2 °F | 64.9 °F | 3.03 in. |
| November | 35.3 °F | 52.5 °F | 2.95 in. |
| December | 28.1 °F | 42.3 °F | 3.15 in. |
| Annual | 43.8 °F | 62.6 °F | 40.67 in. |
| 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 7a : 0°F to 5°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 |