Windsor, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.5 °F (low) to 63.8 °F (high). Annual precipitation averages 47.5 Inches. Windsor 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 | 23.6 °F | 40.2 °F | 3.49 in. |
| February | 25.1 °F | 42.9 °F | 2.58 in. |
| March | 32.0 °F | 50.6 °F | 4.31 in. |
| April | 42.1 °F | 62.7 °F | 3.62 in. |
| May | 51.8 °F | 72.3 °F | 3.99 in. |
| June | 60.9 °F | 81.6 °F | 4.6 in. |
| July | 66.3 °F | 86.0 °F | 4.88 in. |
| August | 64.6 °F | 84.3 °F | 4.59 in. |
| September | 57.3 °F | 78.0 °F | 4.18 in. |
| October | 45.8 °F | 66.0 °F | 3.77 in. |
| November | 35.7 °F | 55.5 °F | 3.27 in. |
| December | 28.6 °F | 45.3 °F | 4.24 in. |
| Annual | 44.5 °F | 63.8 °F | 47.52 in. |
| 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 : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |