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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: Sun Jul 19th 2026 5:30 PM EDT

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Trenton, NJ Weather – 7-19 – Sunny
87° / 66°
Sunny
Sunshine is in the forecast for Trenton, with a high of 87°F and a low of 66°F. There's a very small chance of rainfall, only about 6% with an estimated 0in. Wind will be moderate, blowing around 13mph on average and gusts of 14.6mph at 10 PM. The humidity will be on the higher side, averaging about 66%, the maximum being 67% at 11 PM and 40% being its lowest at 7 PM. Barometric pressure is its highest of 29.92inHg at 11 PM, a lowest point of 29.84inHg at 7 PM with an avg 29.89inHg.
Trenton, NJ Weather – 7-20 – Sunny
87° / 59°

Weather Tomorrow

Sunny
Trenton is set for sunshine with temperatures peaking at 87°F and dipping to 59°F. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 11mph on average and gusts of 16.4mph at 8 PM. Humidity levels should be comfortable, sitting around 55% on average, the maximum being 83% at 11 PM and 29% being its lowest at 3 PM. Barometric pressure is its highest of 29.99inHg at 8 AM, a lowest point of 29.91inHg at 7 PM with an avg 29.95inHg.
Trenton, NJ Weather – 7-21 – Scattered Showers
93° / 68°
Scattered Showers
Trenton may see scattered showers, with daytime highs of 93°F and overnight lows near 68°F. The chance of rain is 82% with an estimated 1.66in. Wind will be moderate, blowing around 17mph on average and gusts of 30.6mph at 7 PM. High humidity with average of 81% is anticipated, the maximum being 96% at 9 PM and 45% being its lowest at 3 PM. Barometric pressure is its highest of 29.94inHg at 12 AM, a lowest point of 29.6inHg at 8 PM with an avg 29.78inHg.
Trenton, NJ Weather – 7-22 – Sunny
82° / 64°
Sunny
Trenton may see a sunny day, with daytime highs of 82°F and overnight lows near 64°F. There's a moderate 36% chance of rainfall with an estimated 0.01in. Wind will be moderate, blowing around 14mph on average and gusts of 17.2mph at 1 AM. The humidity will be on the higher side, averaging about 68%, the maximum being 96% at 12 AM and 40% being its lowest at 4 PM. Barometric pressure is its highest of 30.03inHg at 11 PM, a lowest point of 29.65inHg at 5 AM with an avg 29.78inHg.
Trenton, NJ Weather – 7-23 – Sunny
80° / 58°
Sunny
Daytime highs will reach 80°F with lows dropping to 58°F in Trenton, where it will be sunny. There's a very small chance of rainfall, only about 2%. Winds will be light at 7mph and gusts of 13.3mph at 8 PM. Humidity levels should be comfortable, sitting around 53% on average, the maximum being 73% at 6 AM and 31% being its lowest at 4 PM. Barometric pressure is its highest of 30.13inHg at 8 AM, a lowest point of 30.05inHg at 1 AM with an avg 30.08inHg.
Trenton, NJ Weather – 7-24 – Sunny
85° / 60°
Sunny
In Trenton, it will be sunny with highs near 85°F and lows around 60°F. There's a very small chance of rainfall, only about 3%. Winds will be light at 9mph and gusts of 13.5mph at 8 PM. Humidity levels should be comfortable, sitting around 52% on average, the maximum being 67% at 6 AM and 31% being its lowest at 5 PM. Barometric pressure is its highest of 30.13inHg at 7 AM, a lowest point of 30.03inHg at 5 PM with an avg 30.09inHg.

Currently

Sunny 81°F
29.87 inHg.
Barometer
41%
Humidity
NW 14.8 mph
Wind
Sunny

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