Trenton-Mercer Airport (TTN) Weather 06/23/2026

Today

A chance of showers and thunderstorms, mainly after 5pm. Some of the storms could be severe. Patchy fog before 9am. Otherwise, partly sunny, with a high near 95. Heat index values as high as 102. West wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms likely, mainly before midnight. Some of the storms could be severe. Mostly cloudy, with a low around 70. West wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 95. Heat index values as high as 103. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 66. Northwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Sunny, with a high near 89. Northwest wind around 5 mph.

Saturday Night

Mostly clear, with a low around 65.

Sunday

Mostly sunny, with a high near 92.

Sunday Night

Showers likely between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

Monday

Mostly sunny, with a high near 83.

Monday Night

Partly cloudy, with a low around 60.

Tuesday

A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 40%.

Tuesday Night

Mostly cloudy, with a low around 60.

Wednesday

Mostly sunny, with a high near 84.