Bowmans Addition, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.4 °C (low) to 17.8 °C (high). Annual precipitation averages 1026.9 Millimeters. Bowmans Addition is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.2 °C | 3.9 °C | 68.33 mm |
| February | -4.6 °C | 6.2 °C | 65.53 mm |
| March | -1 °C | 11.1 °C | 90.17 mm |
| April | 4.3 °C | 18.7 °C | 90.17 mm |
| May | 9.5 °C | 23.5 °C | 112.78 mm |
| June | 14.3 °C | 27.7 °C | 107.44 mm |
| July | 16.7 °C | 30.1 °C | 90.93 mm |
| August | 15.7 °C | 29.2 °C | 81.53 mm |
| September | 11.9 °C | 25.6 °C | 97.54 mm |
| October | 5.7 °C | 19.1 °C | 74.93 mm |
| November | 0.6 °C | 12.1 °C | 69.09 mm |
| December | -2.9 °C | 6.2 °C | 78.49 mm |
| Annual | 5.4 °C | 17.8 °C | 1026.93 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |