Callensburg, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.6 °F (low) to 60.6 °F (high). Annual precipitation averages 45.1 Inches. Callensburg 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.1 °F | 35.2 °F | 3.36 in. |
| February | 18.7 °F | 38.1 °F | 2.54 in. |
| March | 25.7 °F | 47.4 °F | 3.34 in. |
| April | 35.5 °F | 61.5 °F | 3.9 in. |
| May | 46.0 °F | 72.2 °F | 3.8 in. |
| June | 55.3 °F | 79.6 °F | 5.04 in. |
| July | 59.3 °F | 83.0 °F | 4.81 in. |
| August | 58.0 °F | 82.3 °F | 4.02 in. |
| September | 51.1 °F | 75.4 °F | 4.02 in. |
| October | 40.1 °F | 63.2 °F | 3.39 in. |
| November | 31.0 °F | 50.3 °F | 3.45 in. |
| December | 24.0 °F | 39.4 °F | 3.45 in. |
| Annual | 38.6 °F | 60.6 °F | 45.12 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 |