Mercerville New Jersey Climate Data

Monthly Average Climate Data for Mercerville New Jersey

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.1 °F40.5 °F3.53 in.
February25.5 °F43.1 °F2.67 in.
March32.4 °F51.0 °F4.34 in.
April42.4 °F63.0 °F3.56 in.
May52.1 °F72.6 °F4.05 in.
June61.3 °F81.7 °F4.49 in.
July66.7 °F86.3 °F5.05 in.
August65.0 °F84.6 °F4.52 in.
September57.8 °F78.2 °F4.07 in.
October46.2 °F66.2 °F3.92 in.
November36.2 °F55.6 °F3.34 in.
December28.9 °F45.3 °F4.32 in.
Annual44.9 °F64 °F47.86 in.

Climate Data for Mercerville 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 ClassificationCfa - Humid Subtropical Climate