Ridgely, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.2 °F (low) to 66.5 °F (high). Annual precipitation averages 46.9 Inches. Ridgely 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 | 26.2 °F | 43.9 °F | 3.49 in. |
| February | 27.2 °F | 46.1 °F | 3.13 in. |
| March | 34.1 °F | 54.1 °F | 4.01 in. |
| April | 44.0 °F | 65.9 °F | 3.65 in. |
| May | 53.6 °F | 74.8 °F | 4.05 in. |
| June | 62.7 °F | 83.6 °F | 4.43 in. |
| July | 67.5 °F | 87.9 °F | 4.37 in. |
| August | 65.4 °F | 86.0 °F | 4.5 in. |
| September | 58.8 °F | 80.2 °F | 4.08 in. |
| October | 47.0 °F | 68.8 °F | 4.0 in. |
| November | 37.2 °F | 57.9 °F | 3.28 in. |
| December | 30.6 °F | 48.2 °F | 3.86 in. |
| Annual | 46.2 °F | 66.5 °F | 46.85 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 |