Princeton Junction New Jersey Climate Data

Monthly Average Climate Data for Princeton Junction New Jersey

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.4 °F40.2 °F3.48 in.
February24.9 °F42.8 °F2.68 in.
March31.8 °F50.7 °F4.37 in.
April41.8 °F62.9 °F3.76 in.
May51.4 °F72.6 °F4.04 in.
June60.5 °F81.7 °F4.6 in.
July66.0 °F86.3 °F5.0 in.
August64.3 °F84.5 °F4.57 in.
September57.0 °F78.2 °F4.21 in.
October45.6 °F66.1 °F3.96 in.
November35.5 °F55.4 °F3.36 in.
December28.3 °F45.2 °F4.42 in.
Annual44.2 °F63.9 °F48.45 in.

Climate Data for Princeton Junction New Jersey

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
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