Dunlo, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.9 °F (low) to 56.2 °F (high). Annual precipitation averages 43.6 Inches. Dunlo 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 | 17.9 °F | 32.1 °F | 3.18 in. |
| February | 18.8 °F | 34.8 °F | 2.66 in. |
| March | 25.7 °F | 43.3 °F | 3.6 in. |
| April | 36.8 °F | 56.7 °F | 3.72 in. |
| May | 47.3 °F | 66.4 °F | 4.34 in. |
| June | 55.5 °F | 74.2 °F | 4.23 in. |
| July | 59.6 °F | 78.1 °F | 4.07 in. |
| August | 58.0 °F | 76.6 °F | 4.01 in. |
| September | 51.3 °F | 70.3 °F | 4.05 in. |
| October | 41.1 °F | 58.7 °F | 3.52 in. |
| November | 31.0 °F | 46.8 °F | 3.08 in. |
| December | 23.3 °F | 36.4 °F | 3.12 in. |
| Annual | 38.9 °F | 56.2 °F | 43.58 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |