Rock Point, Maryland has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.7 °C (low) to 20.2 °C (high). Annual precipitation averages 1136.6 Millimeters. Rock Point is located in USDA Plant Hardiness Zone 8a. 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 | -1.8 °C | 8 °C | 77.72 mm |
| February | -0.9 °C | 9.6 °C | 70.61 mm |
| March | 2.8 °C | 13.7 °C | 99.31 mm |
| April | 8.3 °C | 20.3 °C | 82.55 mm |
| May | 13.9 °C | 24.9 °C | 101.85 mm |
| June | 18.8 °C | 29.5 °C | 108.46 mm |
| July | 21.4 °C | 31.7 °C | 112.27 mm |
| August | 20.6 °C | 30.7 °C | 104.39 mm |
| September | 17.1 °C | 27.4 °C | 106.68 mm |
| October | 10.8 °C | 21.4 °C | 98.04 mm |
| November | 4.8 °C | 15.3 °C | 80.01 mm |
| December | 0.9 °C | 10.4 °C | 94.74 mm |
| Annual | 9.7 °C | 20.2 °C | 1136.63 mm |
| 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 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |