Trenton New Jersey Climate Data

Monthly Average Climate Data for Trenton New Jersey

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.4 °C4.8 °C90.17 mm
February-3.6 °C6.3 °C70.1 mm
March0.3 °C10.6 °C110.49 mm
April5.8 °C17.3 °C90.93 mm
May11.2 °C22.6 °C101.6 mm
June16.4 °C27.7 °C112.78 mm
July19.4 °C30.2 °C127.25 mm
August18.4 °C29.3 °C113.54 mm
September14.5 °C25.8 °C101.35 mm
October8 °C19.1 °C100.33 mm
November2.4 °C13.2 °C85.09 mm
December-1.7 °C7.6 °C110.74 mm
Annual7.2 °C17.9 °C1214.37 mm

Climate Data for Trenton 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 ClassificationCfa - Humid Subtropical Climate