Ridgefield, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 47 °F (low) to 63 °F (high). Annual precipitation averages 48 Inches. Ridgefield 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 | 25.5 °F | 39.4 °F | 3.59 in. |
| February | 27.1 °F | 41.9 °F | 2.81 in. |
| March | 33.5 °F | 49.5 °F | 4.25 in. |
| April | 43.7 °F | 61.4 °F | 4.08 in. |
| May | 53.5 °F | 71.3 °F | 3.9 in. |
| June | 63.2 °F | 80.7 °F | 4.48 in. |
| July | 69.1 °F | 85.8 °F | 4.39 in. |
| August | 67.7 °F | 83.9 °F | 4.5 in. |
| September | 60.6 °F | 77.3 °F | 4.1 in. |
| October | 49.0 °F | 65.5 °F | 4.27 in. |
| November | 39.1 °F | 54.6 °F | 3.45 in. |
| December | 31.8 °F | 44.8 °F | 4.19 in. |
| Annual | 47 °F | 63 °F | 48.01 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 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |