Waller, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.1 °F (low) to 57.9 °F (high). Annual precipitation averages 48.1 Inches. Waller 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.4 °F | 33.2 °F | 3.41 in. |
| February | 17.7 °F | 35.9 °F | 2.53 in. |
| March | 25.0 °F | 44.5 °F | 3.3 in. |
| April | 35.8 °F | 57.6 °F | 4.11 in. |
| May | 46.2 °F | 68.5 °F | 4.48 in. |
| June | 55.0 °F | 76.2 °F | 4.61 in. |
| July | 59.1 °F | 80.6 °F | 4.74 in. |
| August | 57.5 °F | 78.9 °F | 4.62 in. |
| September | 50.6 °F | 72.1 °F | 4.93 in. |
| October | 39.9 °F | 60.2 °F | 4.26 in. |
| November | 30.9 °F | 48.6 °F | 3.35 in. |
| December | 22.8 °F | 38.0 °F | 3.73 in. |
| Annual | 38.1 °F | 57.9 °F | 48.07 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |