South Plainfield New Jersey Climate Data

Monthly Average Climate Data for South Plainfield New Jersey

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.9 °F40.0 °F3.61 in.
February24.2 °F42.8 °F2.86 in.
March31.1 °F50.9 °F4.22 in.
April41.2 °F63.2 °F3.88 in.
May50.9 °F73.0 °F4.0 in.
June60.1 °F81.9 °F4.51 in.
July65.4 °F86.8 °F5.02 in.
August63.9 °F84.8 °F4.47 in.
September56.7 °F78.1 °F4.33 in.
October45.1 °F66.1 °F4.25 in.
November35.2 °F55.3 °F3.39 in.
December28.2 °F45.1 °F4.21 in.
Annual43.7 °F64 °F48.75 in.

Climate Data for South Plainfield New Jersey

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
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