Hackettstown New Jersey Climate Data

Monthly Average Climate Data for Hackettstown New Jersey

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.6 °F36.7 °F3.7 in.
February19.9 °F39.7 °F2.98 in.
March27.4 °F47.9 °F4.06 in.
April38.1 °F60.7 °F3.98 in.
May48.2 °F70.5 °F4.16 in.
June57.2 °F78.7 °F5.06 in.
July62.1 °F83.5 °F4.73 in.
August60.4 °F81.6 °F4.93 in.
September53.1 °F74.9 °F4.8 in.
October41.5 °F63.5 °F4.71 in.
November31.6 °F52.1 °F3.56 in.
December24.4 °F41.9 °F4.38 in.
Annual40.2 °F61 °F51.05 in.

Climate Data for Hackettstown New Jersey

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
2024 plantmaps.com