Howard, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.1 °F (low) to 61 °F (high). Annual precipitation averages 41.2 Inches. Howard is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.2 °F | 35.2 °F | 2.88 in. |
| February | 19.1 °F | 38.6 °F | 2.26 in. |
| March | 26.3 °F | 48.0 °F | 3.34 in. |
| April | 36.4 °F | 61.8 °F | 3.46 in. |
| May | 46.7 °F | 72.6 °F | 3.98 in. |
| June | 56.0 °F | 80.0 °F | 3.76 in. |
| July | 60.5 °F | 84.5 °F | 3.81 in. |
| August | 59.1 °F | 82.6 °F | 3.84 in. |
| September | 51.6 °F | 75.3 °F | 4.1 in. |
| October | 40.1 °F | 63.3 °F | 3.62 in. |
| November | 30.8 °F | 50.6 °F | 2.99 in. |
| December | 23.9 °F | 39.6 °F | 3.14 in. |
| Annual | 39.1 °F | 61 °F | 41.18 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |