Walkersville, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.9 °C (low) to 18.4 °C (high). Annual precipitation averages 1106.7 Millimeters. Walkersville 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 | -4.4 °C | 5 °C | 77.98 mm |
| February | -3.6 °C | 6.8 °C | 62.48 mm |
| March | 0.1 °C | 11.8 °C | 92.46 mm |
| April | 5.6 °C | 18.6 °C | 86.36 mm |
| May | 11.1 °C | 23.6 °C | 104.9 mm |
| June | 16.2 °C | 28.3 °C | 101.09 mm |
| July | 18.9 °C | 30.9 °C | 116.08 mm |
| August | 17.8 °C | 29.8 °C | 81.03 mm |
| September | 13.8 °C | 26 °C | 117.09 mm |
| October | 7.4 °C | 19.6 °C | 95 mm |
| November | 1.6 °C | 13.1 °C | 79.5 mm |
| December | -1.8 °C | 7.4 °C | 92.71 mm |
| Annual | 6.9 °C | 18.4 °C | 1106.68 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |