Palmerton, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41 °F (low) to 61.8 °F (high). Annual precipitation averages 49.8 Inches. Palmerton is located in USDA Plant Hardiness Zone 7a. 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 | 20.2 °F | 37.2 °F | 3.52 in. |
| February | 21.3 °F | 40.2 °F | 2.69 in. |
| March | 28.4 °F | 48.4 °F | 3.58 in. |
| April | 38.7 °F | 61.6 °F | 3.93 in. |
| May | 48.9 °F | 72.0 °F | 4.04 in. |
| June | 57.9 °F | 80.0 °F | 4.99 in. |
| July | 62.8 °F | 84.6 °F | 4.93 in. |
| August | 60.9 °F | 82.8 °F | 4.75 in. |
| September | 53.5 °F | 76.1 °F | 5.38 in. |
| October | 41.9 °F | 64.1 °F | 4.62 in. |
| November | 32.5 °F | 52.5 °F | 3.36 in. |
| December | 25.4 °F | 41.6 °F | 3.99 in. |
| Annual | 41 °F | 61.8 °F | 49.78 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |