Shrewsbury, New Jersey has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.8 °C (low) to 17.1 °C (high). Annual precipitation averages 1237 Millimeters. Shrewsbury is located in USDA Plant Hardiness Zone 7a. 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 | -3.9 °C | 4.8 °C | 104.9 mm |
| February | -3 °C | 6.1 °C | 72.9 mm |
| March | 0.7 °C | 9.8 °C | 108.97 mm |
| April | 5.9 °C | 15.7 °C | 101.6 mm |
| May | 11.2 °C | 20.9 °C | 97.54 mm |
| June | 16.4 °C | 26.1 °C | 111.51 mm |
| July | 19.8 °C | 28.9 °C | 95.5 mm |
| August | 19.1 °C | 28.1 °C | 126.75 mm |
| September | 15.6 °C | 24.7 °C | 100.33 mm |
| October | 9 °C | 18.7 °C | 113.54 mm |
| November | 3.6 °C | 12.9 °C | 84.07 mm |
| December | -0.8 °C | 7.9 °C | 119.38 mm |
| Annual | 7.8 °C | 17.1 °C | 1236.99 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |