Markleysburg, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.5 °F (low) to 59.5 °F (high). Annual precipitation averages 50.7 Inches. Markleysburg is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.4 °F | 35.5 °F | 4.06 in. |
| February | 20.1 °F | 39.0 °F | 3.66 in. |
| March | 26.8 °F | 47.7 °F | 4.29 in. |
| April | 36.6 °F | 60.6 °F | 4.34 in. |
| May | 46.4 °F | 69.7 °F | 5.04 in. |
| June | 54.9 °F | 76.9 °F | 5.14 in. |
| July | 58.7 °F | 80.4 °F | 4.93 in. |
| August | 57.3 °F | 79.2 °F | 4.26 in. |
| September | 50.2 °F | 73.3 °F | 3.96 in. |
| October | 39.5 °F | 62.0 °F | 3.5 in. |
| November | 30.1 °F | 49.9 °F | 3.43 in. |
| December | 23.3 °F | 39.7 °F | 4.07 in. |
| Annual | 38.5 °F | 59.5 °F | 50.68 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |