Rocky Hill New Jersey Climate Data

Monthly Average Climate Data for Rocky Hill New Jersey

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.6 °F39.9 °F3.6 in.
February23.9 °F42.5 °F2.81 in.
March31.0 °F50.6 °F4.4 in.
April40.9 °F62.9 °F3.94 in.
May50.5 °F72.6 °F4.08 in.
June59.6 °F81.6 °F4.59 in.
July65.4 °F86.5 °F5.07 in.
August63.6 °F84.5 °F4.55 in.
September56.3 °F78.0 °F4.23 in.
October44.8 °F66.0 °F4.16 in.
November34.4 °F55.1 °F3.48 in.
December27.6 °F44.9 °F4.52 in.
Annual43.4 °F63.8 °F49.43 in.

Climate Data for Rocky Hill 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 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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