Boonton Average Temperature by Month

This page shows the average temperature in each month of the year in Boonton, New Jersey. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Boonton?
In Boonton, New Jersey, the warmest month is July, with an average daily high temperature of 85.7 °F and an average low of 64.0 °F.
What's the Coldest Month in Boonton?
In Boonton, New Jersey, the coolest month is January, with an average daily high temperature of 38.5 °F and an average low of 21.0 °F.
Month Avg. High Avg. Low
January 38.5 °F 21.0 °F
February 40.6 °F 21.7 °F
March 48.7 °F 29.4 °F
April 61.3 °F 39.4 °F
May 71.9 °F 49.7 °F
June 80.7 °F 59.0 °F
July 85.7 °F 64.0 °F
August 83.8 °F 61.7 °F
September 76.7 °F 54.3 °F
October 65.1 °F 43.7 °F
November 53.1 °F 33.7 °F
December 43.1 °F 27.1 °F
Year 62.5 °F 42.2 °F
Weather Station Details
Years Station Coordinates
1893–2024 Boonton 1 SE location
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