Bowmanstown, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40 °F (low) to 61 °F (high). Annual precipitation averages 50.3 Inches. Bowmanstown 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.1 °F | 36.4 °F | 3.53 in. |
| February | 20.2 °F | 39.4 °F | 2.69 in. |
| March | 27.5 °F | 47.6 °F | 3.57 in. |
| April | 37.8 °F | 60.9 °F | 4.0 in. |
| May | 47.9 °F | 71.4 °F | 4.1 in. |
| June | 56.8 °F | 79.3 °F | 5.07 in. |
| July | 61.7 °F | 83.8 °F | 4.95 in. |
| August | 59.9 °F | 82.0 °F | 4.76 in. |
| September | 52.4 °F | 75.3 °F | 5.35 in. |
| October | 40.7 °F | 63.4 °F | 4.7 in. |
| November | 31.4 °F | 51.7 °F | 3.48 in. |
| December | 24.3 °F | 40.9 °F | 4.11 in. |
| Annual | 40 °F | 61 °F | 50.31 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 6b : -5°F to 0°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 |