Mercerville New Jersey Climate Data

Monthly Average Climate Data for Mercerville New Jersey

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.4 °C4.7 °C89.66 mm
February-3.6 °C6.2 °C67.82 mm
March0.2 °C10.6 °C110.24 mm
April5.8 °C17.2 °C90.42 mm
May11.2 °C22.6 °C102.87 mm
June16.3 °C27.6 °C114.05 mm
July19.3 °C30.2 °C128.27 mm
August18.3 °C29.2 °C114.81 mm
September14.3 °C25.7 °C103.38 mm
October7.9 °C19 °C99.57 mm
November2.3 °C13.1 °C84.84 mm
December-1.7 °C7.4 °C109.73 mm
Annual7.2 °C17.8 °C1215.66 mm

Climate Data for Mercerville 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 ClassificationCfa - Humid Subtropical Climate
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