Anderson, New Jersey has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.4 °F (low) to 61.6 °F (high). Annual precipitation averages 51.8 Inches. Anderson is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.3 °F | 37.3 °F | 3.7 in. |
| February | 20.5 °F | 40.4 °F | 3.02 in. |
| March | 27.7 °F | 48.5 °F | 3.98 in. |
| April | 38.0 °F | 61.3 °F | 4.09 in. |
| May | 48.2 °F | 71.1 °F | 4.28 in. |
| June | 57.1 °F | 79.3 °F | 5.04 in. |
| July | 62.1 °F | 84.1 °F | 4.98 in. |
| August | 60.4 °F | 82.2 °F | 4.96 in. |
| September | 53.2 °F | 75.6 °F | 4.92 in. |
| October | 41.6 °F | 64.2 °F | 4.65 in. |
| November | 31.7 °F | 52.8 °F | 3.6 in. |
| December | 24.6 °F | 42.5 °F | 4.53 in. |
| Annual | 40.4 °F | 61.6 °F | 51.75 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |