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

91°F

33°C

Humidity	54%
Wind Speed	NW 8 mph
Barometer	30.00 in (1015.0 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	99°F (37°C)
Last update	3 Jul 9:53 am EDT

More Information:

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

Extended Forecast for

Princeton NJ

Extreme Heat Warning July 3, 10:32am until July 4, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning July 3, 10:32am until July 4, 08:00pm
NOW until 8:00pm Sat
Extreme Heat Warning
Today
High: 102 °F
Hot
Tonight
Low: 77 °F
Isolated
T-storms then
Partly Cloudy
Independence Day
High: 98 °F
Sunny then
Isolated
T-storms
Saturday Night
Low: 72 °F
Scattered
T-storms
Sunday
High: 88 °F
Slight Chance
T-storms then
Showers
Likely
Sunday Night
Low: 67 °F
Showers
Monday
High: 81 °F
Showers
Monday Night
Low: 65 °F
Showers
Likely

Detailed Forecast

Today

Sunny and hot, with a high near 102. Heat index values as high as 110. West wind 5 to 10 mph.

Tonight

Isolated showers and thunderstorms before midnight. Mostly clear, with a low around 77. West wind around 5 mph. Chance of precipitation is 20%.

Independence Day

Isolated showers and thunderstorms after 2pm. Sunny and hot, with a high near 98. Heat index values as high as 104. West wind 5 to 10 mph. Chance of precipitation is 20%.

Saturday Night

Scattered showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 72. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday

A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 88. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday Night

Showers and possibly a thunderstorm. Low around 67. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

Showers, with thunderstorms also possible after 2pm. High near 81. Chance of precipitation is 80%.

Monday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.

Tuesday

A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 50%.

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 65. Chance of precipitation is 30%.

Wednesday

Partly sunny, with a high near 86.

Wednesday Night

Partly cloudy, with a low around 66.

Thursday

Mostly sunny, with a high near 89.