Sandy, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.2 °F (low) to 58.3 °F (high). Annual precipitation averages 44.3 Inches. Sandy is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.8 °F | 33.2 °F | 3.29 in. |
| February | 17.6 °F | 36.2 °F | 2.5 in. |
| March | 24.4 °F | 45.1 °F | 3.33 in. |
| April | 34.6 °F | 59.3 °F | 3.77 in. |
| May | 44.8 °F | 69.8 °F | 3.93 in. |
| June | 53.7 °F | 76.8 °F | 4.58 in. |
| July | 57.8 °F | 80.6 °F | 4.49 in. |
| August | 56.2 °F | 79.5 °F | 4.01 in. |
| September | 49.5 °F | 72.8 °F | 4.01 in. |
| October | 38.6 °F | 61.0 °F | 3.44 in. |
| November | 29.7 °F | 48.3 °F | 3.44 in. |
| December | 22.8 °F | 37.5 °F | 3.54 in. |
| Annual | 37.2 °F | 58.3 °F | 44.33 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| 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 |