Dangerous Heat and Humidity Through Saturday

Dangerously hot and humid conditions are expected to continue through Saturday. Additionally, there will be a threat of thunderstorms through Sunday. View this briefing for details. Read More >

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

100°F

38°C

Humidity	35%
Wind Speed	W 9 mph
Barometer	29.89 in (1011.3 mb)
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Heat Index	106°F (41°C)
Last update	3 Jul 5:53 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Princeton NJ

Severe T-storm Watch until July 3, 11:00pm

Extreme Heat Warning July 3, 06:31pm until July 4, 08:00pm

Click here for hazard details and duration

...

Extreme Heat Warning

Severe T-storm Watch until July 3, 11:00pm
Extreme Heat Warning July 3, 06:31pm until July 4, 08:00pm
NOW: Multiple hazards in effect
Click HERE for Details
Tonight
Low: 76 °F
Severe
Thunderstorms
then Partly
Cloudy
Independence Day
High: 97 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 73 °F
Showers
Likely
Sunday
High: 85 °F
Chance
Showers then
Showers
Likely
Sunday Night
Low: 69 °F
Showers
Monday
High: 77 °F
Showers
Monday Night
Low: 65 °F
Showers
Tuesday
High: 81 °F
Showers
Likely

Detailed Forecast

Tonight

A chance of showers and thunderstorms, mainly before 8pm. Some of the storms could be severe. Partly cloudy, with a low around 76. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 101. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Showers and thunderstorms likely, mainly before 3am. Mostly cloudy, with a low around 73. West wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Sunday

A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

Showers and possibly a thunderstorm. Low around 69. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

Monday

Showers and possibly a thunderstorm. High near 77. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Monday Night

Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.

Tuesday

Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.

Tuesday Night

A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.

Wednesday

Partly sunny, with a high near 83.

Wednesday Night

Partly cloudy, with a low around 67.

Thursday

Mostly sunny, with a high near 89.

Thursday Night

Partly cloudy, with a low around 69.

Friday

A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 40%.