Summit New Jersey Climate Data

Monthly Average Climate Data for Summit New Jersey

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.4 °F38.5 °F3.64 in.
February22.6 °F41.2 °F2.86 in.
March29.7 °F49.5 °F4.25 in.
April40.2 °F61.6 °F4.03 in.
May49.7 °F71.5 °F4.1 in.
June59.2 °F80.4 °F4.67 in.
July64.3 °F85.4 °F4.6 in.
August62.6 °F83.6 °F4.53 in.
September55.5 °F76.8 °F4.38 in.
October43.6 °F64.8 °F4.43 in.
November34.1 °F53.6 °F3.52 in.
December26.9 °F43.5 °F4.25 in.
Annual42.5 °F62.5 °F49.26 in.

Climate Data for Summit New Jersey

Average First Frost DateOct. 11 - Oct. 20
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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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