Union New Jersey Climate Data

Monthly Average Climate Data for Union New Jersey

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.9 °F39.8 °F3.55 in.
February25.3 °F42.5 °F2.9 in.
March32.1 °F50.6 °F4.17 in.
April42.3 °F62.7 °F3.92 in.
May52.0 °F72.6 °F4.06 in.
June61.5 °F81.6 °F4.48 in.
July66.9 °F86.8 °F4.71 in.
August65.4 °F85.0 °F4.49 in.
September58.5 °F78.2 °F4.17 in.
October46.5 °F66.1 °F4.4 in.
November36.8 °F54.9 °F3.38 in.
December29.6 °F44.8 °F4.07 in.
Annual45.1 °F63.8 °F48.3 in.

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 : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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