Matawan, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.7 °F (low) to 63.7 °F (high). Annual precipitation averages 48.1 Inches. Matawan 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 | 24.7 °F | 40.4 °F | 3.69 in. |
| February | 26.2 °F | 43.0 °F | 2.89 in. |
| March | 33.1 °F | 50.4 °F | 4.26 in. |
| April | 42.9 °F | 62.3 °F | 3.87 in. |
| May | 52.7 °F | 71.9 °F | 3.82 in. |
| June | 61.7 °F | 81.2 °F | 4.47 in. |
| July | 67.5 °F | 85.8 °F | 4.59 in. |
| August | 65.6 °F | 84.3 °F | 4.43 in. |
| September | 59.1 °F | 77.5 °F | 4.13 in. |
| October | 47.5 °F | 66.1 °F | 4.23 in. |
| November | 37.7 °F | 55.4 °F | 3.38 in. |
| December | 30.2 °F | 45.7 °F | 4.38 in. |
| Annual | 45.7 °F | 63.7 °F | 48.14 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 |