Pikesville, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.3 °C (low) to 18.6 °C (high). Annual precipitation averages 1196.1 Millimeters. Pikesville is located in USDA Plant Hardiness Zone 7b. 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 | -4.2 °C | 5.6 °C | 92.2 mm |
| February | -3.2 °C | 7.2 °C | 72.14 mm |
| March | 0.4 °C | 11.9 °C | 108.71 mm |
| April | 6.2 °C | 18.8 °C | 99.82 mm |
| May | 11.4 °C | 23.8 °C | 110.49 mm |
| June | 16.5 °C | 28.4 °C | 104.65 mm |
| July | 19.2 °C | 30.8 °C | 110.74 mm |
| August | 18.1 °C | 29.7 °C | 88.65 mm |
| September | 14.4 °C | 25.9 °C | 118.62 mm |
| October | 7.9 °C | 19.6 °C | 106.68 mm |
| November | 2.5 °C | 13.3 °C | 85.09 mm |
| December | -1.5 °C | 7.8 °C | 98.3 mm |
| Annual | 7.3 °C | 18.6 °C | 1196.09 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |