Great Bend, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.3 °F (low) to 57.8 °F (high). Annual precipitation averages 43.2 Inches. Great Bend is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.4 °F | 31.9 °F | 2.8 in. |
| February | 16.2 °F | 34.2 °F | 2.26 in. |
| March | 23.3 °F | 43.2 °F | 3.17 in. |
| April | 34.1 °F | 57.1 °F | 3.69 in. |
| May | 45.1 °F | 69.2 °F | 3.78 in. |
| June | 54.3 °F | 77.5 °F | 4.47 in. |
| July | 59.0 °F | 81.4 °F | 4.25 in. |
| August | 57.6 °F | 80.1 °F | 4.39 in. |
| September | 50.6 °F | 73.0 °F | 4.15 in. |
| October | 39.6 °F | 60.8 °F | 4.03 in. |
| November | 30.3 °F | 47.4 °F | 3.06 in. |
| December | 22.6 °F | 37.2 °F | 3.17 in. |
| Annual | 37.3 °F | 57.8 °F | 43.22 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |