Clayton, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.5 °F (low) to 64.7 °F (high). Annual precipitation averages 48.5 Inches. Clayton 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 | 24.8 °F | 41.5 °F | 3.94 in. |
| February | 26.1 °F | 44.0 °F | 3.0 in. |
| March | 32.6 °F | 51.7 °F | 4.63 in. |
| April | 42.9 °F | 63.8 °F | 3.62 in. |
| May | 52.3 °F | 73.5 °F | 3.8 in. |
| June | 61.9 °F | 82.6 °F | 4.38 in. |
| July | 67.4 °F | 86.8 °F | 4.86 in. |
| August | 65.7 °F | 84.7 °F | 4.81 in. |
| September | 58.9 °F | 78.5 °F | 4.12 in. |
| October | 46.8 °F | 66.7 °F | 3.95 in. |
| November | 36.7 °F | 56.0 °F | 3.04 in. |
| December | 29.8 °F | 46.4 °F | 4.3 in. |
| Annual | 45.5 °F | 64.7 °F | 48.45 in. |
| 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 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |