Union New Jersey Climate Data

Monthly Average Climate Data for Union New Jersey

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.5 °C4.3 °C90.17 mm
February-3.7 °C5.8 °C73.66 mm
March0.1 °C10.3 °C105.92 mm
April5.7 °C17.1 °C99.57 mm
May11.1 °C22.6 °C103.12 mm
June16.4 °C27.6 °C113.79 mm
July19.4 °C30.4 °C119.63 mm
August18.6 °C29.4 °C114.05 mm
September14.7 °C25.7 °C105.92 mm
October8.1 °C18.9 °C111.76 mm
November2.7 °C12.7 °C85.85 mm
December-1.3 °C7.1 °C103.38 mm
Annual7.3 °C17.7 °C1226.82 mm

Climate Data for Union New Jersey

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
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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