Clarysville, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.6 °C (low) to 16 °C (high). Annual precipitation averages 1117.9 Millimeters. Clarysville is located in USDA Plant Hardiness Zone 6b. 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 | -6.3 °C | 2.2 °C | 77.47 mm |
| February | -5.7 °C | 4.2 °C | 74.17 mm |
| March | -2.1 °C | 9 °C | 99.82 mm |
| April | 3.4 °C | 16.9 °C | 100.58 mm |
| May | 8.9 °C | 21.8 °C | 121.67 mm |
| June | 13.6 °C | 26 °C | 114.3 mm |
| July | 15.9 °C | 28.2 °C | 94.23 mm |
| August | 15 °C | 27.4 °C | 85.85 mm |
| September | 11.3 °C | 23.9 °C | 102.87 mm |
| October | 5.3 °C | 17.5 °C | 83.82 mm |
| November | 0.1 °C | 10.3 °C | 76.96 mm |
| December | -3.8 °C | 4.6 °C | 86.11 mm |
| Annual | 4.6 °C | 16 °C | 1117.85 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°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 |