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Trenton, NJ Weather Tomorrow

Stay one step ahead with tomorrow's weather in Trenton and a reliable 5 day forecast including daily precipitation forecasts, changing sky conditions, daytime highs, overnight lows, Fahrenheit and Celsius temperatures, sunrise, sunset, wind chill, and local wind details across the Trenton area and around Mercer county, New Jersey.
Updated: Sat Sep 5th 2026 5:00 PM EDT
Trenton, NJ Weather – 9-5 – Sunny
84° / 69°
Sunny
Trenton may see sunshine, with daytime highs of 84°F and overnight lows near 69°F. There's a very small chance of rainfall, only about 8%. Wind will be moderate, blowing around 13mph on average and gusts of 17.2mph at 6 PM. The humidity will be on the higher side, averaging about 66%, the maximum being 81% at 11 PM and 49% being its lowest at 6 PM. Barometric pressure is its highest of 29.87inHg at 10 PM, a lowest point of 29.82inHg at 6 PM with an avg 29.85inHg.
Trenton, NJ Weather – 9-6 – Scattered Showers
78° / 62°

Weather Tomorrow

Scattered Showers
Highs will reach 78°F with lows near 62°F in Trenton, where scattered showers are. Rainfall predicted to have a 69% chance with an estimated 0.15in. Winds will be light at 9mph and gusts of 13.7mph at 7 AM. The humidity will be on the higher side, averaging about 76%, the maximum being 92% at 7 AM and 49% being its lowest at 3 PM. Barometric pressure is its highest of 30.06inHg at 11 PM, a lowest point of 29.87inHg at 12 AM with an avg 29.96inHg.
Trenton, NJ Weather – 9-7 – Sunny
78° / 59°
Sunny
Highs will reach 78°F with lows near 59°F in Trenton, where a sunny day is. There's a very small chance of rainfall, only about 3%. Winds will be light at 7mph and gusts of 12.5mph at 10 PM. Humidity levels should be comfortable, sitting around 54% on average, the maximum being 85% at 4 AM and 27% being its lowest at 4 PM. Barometric pressure is its highest of 30.19inHg at 10 AM, a lowest point of 30.09inHg at 12 AM with an avg 30.14inHg.
Trenton, NJ Weather – 9-8 – Overcast
82° / 61°
Overcast
Daytime highs will reach 82°F with lows dropping to 61°F in Trenton, where skies will be overcast. There might be light rainfall having a 11% chance. Winds will be light at 7mph and gusts of 14.8mph at 4 AM. Humidity levels should be comfortable, sitting around 53% on average, the maximum being 70% at 7 AM and 34% being its lowest at 2 PM. Barometric pressure is its highest of 30.27inHg at 9 AM, a lowest point of 30.14inHg at 4 PM with an avg 30.2inHg.
Trenton, NJ Weather – 9-9 – Sunny
87° / 68°
Sunny
Daytime highs will reach 87°F with lows dropping to 68°F in Trenton, where it will be sunny. There's a very small chance of rainfall, only about 6%. Wind will be moderate, blowing around 14mph on average and gusts of 34.5mph at 11 PM. Humidity levels should be comfortable, sitting around 56% on average, the maximum being 74% at 1 AM and 35% being its lowest at 3 PM. Barometric pressure is its highest of 30.22inHg at 12 AM, a lowest point of 29.99inHg at 11 PM with an avg 30.12inHg.
Trenton, NJ Weather – 9-10 – Overcast
88° / 68°
Overcast
In Trenton, overcast is likely with a high near 88°F and a low around 68°F. Rainfall predicted to have a 70% chance with an estimated 0.36in. Wind will be moderate, blowing around 14mph on average and gusts of 36.3mph at 12 AM. The humidity will be on the higher side, averaging about 61%, the maximum being 93% at 11 PM and 46% being its lowest at 2 PM. Barometric pressure is its highest of 29.95inHg at 12 AM, a lowest point of 29.74inHg at 5 PM with an avg 29.83inHg.

Currently

Sunny 83°F
29.81 inHg.
Barometer
48%
Humidity
N 20.5 mph
Wind
Sunny

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