Greenwich New Jersey Climate Data

Monthly Average Climate Data for Greenwich New Jersey

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-3.3 °C5.6 °C83.82 mm
February-2.7 °C6.5 °C72.64 mm
March1.2 °C10.7 °C102.11 mm
April6.7 °C17.4 °C87.38 mm
May12.2 °C22.6 °C91.44 mm
June17.4 °C27.6 °C109.98 mm
July20.4 °C29.9 °C113.03 mm
August19.5 °C28.9 °C108.71 mm
September15.8 °C25.7 °C100.08 mm
October9.3 °C19.5 °C93.73 mm
November3.5 °C13.4 °C75.95 mm
December-0.6 °C8.1 °C97.28 mm
Annual8.3 °C18 °C1136.15 mm

Climate Data for Greenwich New Jersey

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7b : -15°C to -12.2°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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