Elkridge, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.2 °F (low) to 66.2 °F (high). Annual precipitation averages 47.9 Inches. Elkridge 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.6 °F | 43.2 °F | 3.32 in. |
| February | 28.1 °F | 45.9 °F | 3.05 in. |
| March | 34.9 °F | 54.1 °F | 4.38 in. |
| April | 45.0 °F | 66.2 °F | 3.68 in. |
| May | 54.7 °F | 75.1 °F | 4.37 in. |
| June | 63.9 °F | 83.9 °F | 4.41 in. |
| July | 68.8 °F | 88.2 °F | 4.55 in. |
| August | 66.9 °F | 86.3 °F | 4.02 in. |
| September | 60.1 °F | 79.6 °F | 4.65 in. |
| October | 48.4 °F | 68.1 °F | 4.09 in. |
| November | 38.2 °F | 57.0 °F | 3.32 in. |
| December | 31.0 °F | 47.3 °F | 4.06 in. |
| Annual | 47.2 °F | 66.2 °F | 47.9 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 7b : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |