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Climate & Weather Averages in Trenton, New Jersey, USA

Currently: 85 °F. Scattered clouds. (Weather station: Mercer County Airport, USA). See more current weather

Annual Weather Averages Near Trenton

Averages are for Mercer County Airport, which is 6 miles from Trenton.

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Trenton

High Temp: 86 °F

Low Temp: 25 °F

Mean Temp: 54 °F

Precipitation: 3.21"

Humidity: 65%

Dew Point: 42 °F

Wind: 12 mph

Pressure: 30.03 "Hg

Visibility: 9 mi

January Climate & Weather Averages in Trenton

High Temp: 40 °F

Low Temp: 25 °F

Mean Temp: 32 °F

Precipitation: 2.53"

Humidity: 63%

Dew Point: 21 °F

Wind: 13 mph

Pressure: 30.08 "Hg

Visibility: 9 mi

February Climate & Weather Averages in Trenton

High Temp: 43 °F

Low Temp: 26 °F

Mean Temp: 34 °F

Precipitation: 2.24"

Humidity: 60%

Dew Point: 21 °F

Wind: 14 mph

Pressure: 30.06 "Hg

Visibility: 9 mi

March Climate & Weather Averages in Trenton

High Temp: 51 °F

Low Temp: 33 °F

Mean Temp: 42 °F

Precipitation: 3.27"

Humidity: 58%

Dew Point: 27 °F

Wind: 15 mph

Pressure: 30.06 "Hg

Visibility: 9 mi

April Climate & Weather Averages in Trenton

High Temp: 63 °F

Low Temp: 42 °F

Mean Temp: 52 °F

Precipitation: 3.01"

Humidity: 57%

Dew Point: 37 °F

Wind: 14 mph

Pressure: 29.99 "Hg

Visibility: 9 mi

May Climate & Weather Averages in Trenton

High Temp: 72 °F

Low Temp: 52 °F

Mean Temp: 62 °F

Precipitation: 3.37"

Humidity: 64%

Dew Point: 49 °F

Wind: 12 mph

Pressure: 29.99 "Hg

Visibility: 9 mi

June Climate & Weather Averages in Trenton

High Temp: 81 °F

Low Temp: 61 °F

Mean Temp: 71 °F

Precipitation: 3.71"

Humidity: 67%

Dew Point: 60 °F

Wind: 11 mph

Pressure: 29.95 "Hg

Visibility: 9 mi

July Climate & Weather Averages in Trenton

High Temp: 86 °F

Low Temp: 67 °F

Mean Temp: 77 °F

Precipitation: 3.96"

Humidity: 66%

Dew Point: 64 °F

Wind: 10 mph

Pressure: 29.95 "Hg

Visibility: 9 mi

August Climate & Weather Averages in Trenton

High Temp: 84 °F

Low Temp: 65 °F

Mean Temp: 74 °F

Precipitation: 3.68"

Humidity: 69%

Dew Point: 63 °F

Wind: 9 mph

Pressure: 30.00 "Hg

Visibility: 9 mi

September Climate & Weather Averages in Trenton

High Temp: 77 °F

Low Temp: 58 °F

Mean Temp: 68 °F

Precipitation: 3.77"

Humidity: 70%

Dew Point: 57 °F

Wind: 10 mph

Pressure: 30.04 "Hg

Visibility: 9 mi

October Climate & Weather Averages in Trenton

High Temp: 66 °F

Low Temp: 46 °F

Mean Temp: 56 °F

Precipitation: 3.08"

Humidity: 69%

Dew Point: 46 °F

Wind: 11 mph

Pressure: 30.06 "Hg

Visibility: 9 mi

November Climate & Weather Averages in Trenton

High Temp: 55 °F

Low Temp: 36 °F

Mean Temp: 46 °F

Precipitation: 2.71"

Humidity: 65%

Dew Point: 34 °F

Wind: 12 mph

Pressure: 30.11 "Hg

Visibility: 9 mi

December Climate & Weather Averages in Trenton

High Temp: 45 °F

Low Temp: 29 °F

Mean Temp: 37 °F

Precipitation: 3.22"

Humidity: 66%

Dew Point: 26 °F

Wind: 12 mph

Pressure: 30.09 "Hg

Visibility: 9 mi

Quick Climate Info

Hottest MonthJuly (77 °F avg)
Coldest MonthJanuary (32 °F avg)
Wettest MonthJuly (3.96" avg)
Windiest MonthMarch (15 mph avg)
Annual precip.38.56" (per year)

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