Cecilton, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.5 °F (low) to 65.1 °F (high). Annual precipitation averages 46.4 Inches. Cecilton is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.8 °F | 42.5 °F | 3.29 in. |
| February | 25.8 °F | 44.8 °F | 2.87 in. |
| March | 33.0 °F | 52.9 °F | 4.14 in. |
| April | 43.2 °F | 64.3 °F | 3.62 in. |
| May | 52.8 °F | 73.5 °F | 3.9 in. |
| June | 62.1 °F | 82.2 °F | 4.69 in. |
| July | 67.2 °F | 86.7 °F | 4.42 in. |
| August | 65.3 °F | 84.8 °F | 4.14 in. |
| September | 58.5 °F | 78.9 °F | 4.39 in. |
| October | 46.4 °F | 67.4 °F | 3.96 in. |
| November | 36.6 °F | 56.3 °F | 3.11 in. |
| December | 29.7 °F | 46.4 °F | 3.91 in. |
| Annual | 45.5 °F | 65.1 °F | 46.44 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |