Whitehaven, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.3 °F (low) to 68.2 °F (high). Annual precipitation averages 46.2 Inches. Whitehaven is located in USDA Plant Hardiness Zone 7b. 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 | 28.1 °F | 46.5 °F | 3.39 in. |
| February | 29.1 °F | 48.9 °F | 2.94 in. |
| March | 35.6 °F | 56.2 °F | 4.1 in. |
| April | 45.5 °F | 67.8 °F | 3.51 in. |
| May | 55.0 °F | 76.1 °F | 3.65 in. |
| June | 64.3 °F | 84.4 °F | 4.07 in. |
| July | 69.3 °F | 88.8 °F | 4.4 in. |
| August | 67.9 °F | 86.7 °F | 4.92 in. |
| September | 61.8 °F | 81.4 °F | 4.34 in. |
| October | 50.6 °F | 71.1 °F | 4.04 in. |
| November | 39.6 °F | 59.8 °F | 3.16 in. |
| December | 32.4 °F | 50.6 °F | 3.69 in. |
| Annual | 48.3 °F | 68.2 °F | 46.21 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |