Hazleton, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.7 °F (low) to 57.5 °F (high). Annual precipitation averages 52.9 Inches. Hazleton is located in USDA Plant Hardiness Zone 6b. 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 | 17.3 °F | 32.9 °F | 3.82 in. |
| February | 18.7 °F | 35.9 °F | 2.94 in. |
| March | 25.7 °F | 44.0 °F | 3.87 in. |
| April | 36.3 °F | 57.3 °F | 4.46 in. |
| May | 46.8 °F | 67.9 °F | 4.35 in. |
| June | 55.3 °F | 75.6 °F | 5.43 in. |
| July | 59.8 °F | 80.0 °F | 4.85 in. |
| August | 57.9 °F | 78.0 °F | 4.96 in. |
| September | 51.2 °F | 71.5 °F | 5.38 in. |
| October | 40.8 °F | 60.3 °F | 4.96 in. |
| November | 31.2 °F | 48.1 °F | 3.8 in. |
| December | 23.1 °F | 37.9 °F | 4.06 in. |
| Annual | 38.7 °F | 57.5 °F | 52.88 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |