Whaleyville, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.6 °F (low) to 66.9 °F (high). Annual precipitation averages 47.9 Inches. Whaleyville 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 | 26.9 °F | 45.7 °F | 3.57 in. |
| February | 28.0 °F | 48.1 °F | 3.15 in. |
| March | 34.3 °F | 55.0 °F | 4.29 in. |
| April | 44.1 °F | 65.5 °F | 3.44 in. |
| May | 53.6 °F | 74.0 °F | 3.67 in. |
| June | 63.0 °F | 82.4 °F | 3.97 in. |
| July | 67.8 °F | 87.5 °F | 4.45 in. |
| August | 65.7 °F | 85.5 °F | 5.08 in. |
| September | 59.7 °F | 80.1 °F | 4.38 in. |
| October | 48.0 °F | 69.8 °F | 4.38 in. |
| November | 37.5 °F | 59.1 °F | 3.36 in. |
| December | 31.1 °F | 50.1 °F | 4.2 in. |
| Annual | 46.6 °F | 66.9 °F | 47.94 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |