Hopewell New Jersey Climate Data

Monthly Average Climate Data for Hopewell New Jersey

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5.5 °C4 °C91.95 mm
February-4.8 °C5.4 °C72.39 mm
March-0.9 °C10 °C107.7 mm
April4.8 °C16.9 °C99.82 mm
May10.3 °C22.2 °C106.68 mm
June15.3 °C27.2 °C117.09 mm
July18.2 °C29.9 °C132.59 mm
August17.3 °C28.8 °C116.84 mm
September13.2 °C25.2 °C108.71 mm
October6.8 °C18.5 °C105.92 mm
November1.3 °C12.5 °C87.88 mm
December-2.7 °C6.7 °C113.79 mm
Annual6.1 °C17.3 °C1261.36 mm

Climate Data for Hopewell New Jersey

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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