Raritan New Jersey Climate Data

Monthly Average Climate Data for Raritan New Jersey

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.8 °F39.3 °F3.57 in.
February23.1 °F42.0 °F2.75 in.
March30.2 °F50.2 °F4.15 in.
April40.4 °F62.4 °F3.84 in.
May50.2 °F72.3 °F4.07 in.
June59.2 °F81.1 °F4.52 in.
July64.5 °F86.1 °F4.87 in.
August63.0 °F84.1 °F4.6 in.
September55.7 °F77.5 °F4.16 in.
October44.3 °F65.4 °F4.26 in.
November33.9 °F54.7 °F3.3 in.
December27.1 °F44.4 °F4.17 in.
Annual42.8 °F63.3 °F48.26 in.

Climate Data for Raritan 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 6a : -10°F to -5°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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