Dangerous Heat and Humidity Today through Saturday

Dangerously hot and humid conditions are expected to build starting today through Saturday. Additionally, there will be a threat of thunderstorms on some of the days. 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

79°F

26°C

Humidity	85%
Wind Speed	SW 3 mph
Barometer	29.98 in (1014.4 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	2 Jul 4:53 am EDT

More Information:

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

Extended Forecast for

Princeton North NJ

Extreme Heat Warning July 2, 05:01am until July 4, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning July 2, 05:01am until July 4, 08:00pm
NOW until 8:00pm Sat
Extreme Heat Warning
Today
High: 103 °F
Hot
Tonight
Low: 78 °F
Clear
Friday
High: 101 °F
Sunny then
Isolated
T-storms
Friday Night
Low: 76 °F
Isolated
T-storms
Independence Day
High: 99 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 72 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 93 °F
Mostly Sunny
then Showers
Likely
Sunday Night
Low: 68 °F
Showers
Likely

Detailed Forecast

Today

Sunny and hot, with a high near 103. Heat index values as high as 109. West wind around 5 mph.

Tonight

Clear, with a low around 78. West wind around 5 mph.

Friday

Isolated showers and thunderstorms after 3pm. Sunny and hot, with a high near 101. Heat index values as high as 108. Light west wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 20%.

Friday Night

Isolated showers and thunderstorms before 2am. Mostly clear, with a low around 76. West wind around 5 mph. Chance of precipitation is 20%.

Independence Day

A chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 99. 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.

Saturday Night

A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday

Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 93. Chance of precipitation is 60%.

Sunday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.

Monday

Showers likely, then showers and possibly a thunderstorm after 2pm. High near 84. Chance of precipitation is 80%.

Monday Night

Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 66. Chance of precipitation is 80%.

Tuesday

Partly sunny, with a high near 85.

Tuesday Night

Partly cloudy, with a low around 65.

Wednesday

Mostly sunny, with a high near 82.