Sandy Hook, Maryland has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.5 °C (low) to 18.8 °C (high). Annual precipitation averages 1067.6 Millimeters. Sandy Hook is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5 °C | 5.3 °C | 79.25 mm |
| February | -4.1 °C | 7.2 °C | 60.96 mm |
| March | -0.2 °C | 12.2 °C | 89.92 mm |
| April | 5.5 °C | 19.1 °C | 84.58 mm |
| May | 11.2 °C | 24 °C | 106.93 mm |
| June | 15.8 °C | 28.6 °C | 99.06 mm |
| July | 18.5 °C | 31.1 °C | 102.36 mm |
| August | 17.4 °C | 30 °C | 83.31 mm |
| September | 13.5 °C | 26.4 °C | 112.01 mm |
| October | 6.5 °C | 20.3 °C | 85.34 mm |
| November | 1 °C | 13.5 °C | 78.74 mm |
| December | -2.3 °C | 7.7 °C | 85.09 mm |
| Annual | 6.5 °C | 18.8 °C | 1067.55 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |