White Oak, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.2 °C (low) to 18.9 °C (high). Annual precipitation averages 1161.3 Millimeters. White Oak is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.2 °C | 6.1 °C | 78.99 mm |
| February | -2.4 °C | 7.8 °C | 69.6 mm |
| March | 1.3 °C | 12.6 °C | 101.35 mm |
| April | 6.9 °C | 19.3 °C | 88.39 mm |
| May | 12.4 °C | 23.9 °C | 113.03 mm |
| June | 17.3 °C | 28.5 °C | 117.09 mm |
| July | 19.9 °C | 30.8 °C | 112.01 mm |
| August | 19 °C | 29.7 °C | 94.49 mm |
| September | 15.4 °C | 26 °C | 113.79 mm |
| October | 8.9 °C | 19.7 °C | 97.79 mm |
| November | 3.1 °C | 13.7 °C | 80.01 mm |
| December | -0.8 °C | 8.3 °C | 94.74 mm |
| Annual | 8.2 °C | 18.9 °C | 1161.28 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |