Broadway, New Jersey has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5 °C (low) to 16.8 °C (high). Annual precipitation averages 1315.7 Millimeters. Broadway is located in USDA Plant Hardiness Zone 7a. 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 | -6.7 °C | 3.2 °C | 92.71 mm |
| February | -5.9 °C | 4.9 °C | 76.45 mm |
| March | -2.1 °C | 9.6 °C | 102.62 mm |
| April | 3.6 °C | 16.6 °C | 102.36 mm |
| May | 9.3 °C | 22.1 °C | 108.46 mm |
| June | 14.3 °C | 26.7 °C | 126.24 mm |
| July | 17.1 °C | 29.3 °C | 129.29 mm |
| August | 16.1 °C | 28.2 °C | 125.48 mm |
| September | 12.1 °C | 24.6 °C | 129.79 mm |
| October | 5.7 °C | 18.2 °C | 119.13 mm |
| November | 0.2 °C | 11.8 °C | 90.68 mm |
| December | -3.7 °C | 6 °C | 112.52 mm |
| Annual | 5 °C | 16.8 °C | 1315.73 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |