Allentown New Jersey Climate Data

Monthly Average Climate Data for Allentown New Jersey

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.4 °C4.9 °C89.92 mm
February-3.6 °C6.3 °C67.06 mm
March0.2 °C10.6 °C109.98 mm
April5.8 °C17.2 °C90.17 mm
May11.1 °C22.5 °C101.09 mm
June16.2 °C27.7 °C113.54 mm
July19.2 °C30.1 °C124.71 mm
August18.3 °C29.2 °C118.11 mm
September14.3 °C25.7 °C104.14 mm
October7.9 °C19.1 °C97.54 mm
November2.3 °C13.3 °C83.31 mm
December-1.7 °C7.6 °C108.2 mm
Annual7.1 °C17.9 °C1207.77 mm

Climate Data for Allentown 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 ConditionsSevere Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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