Briefing for Heat, Severe Storm, and Flash Flood Risks through Thursday

Dangerously hot and humid conditions are expected through Wednesday. There is also a threat of isolated severe thunderstorms on Wednesday. Flash flooding from locally heavy rainfall is possible on Thursday. See this briefing for details on these hazards. Read More >

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

80°F

27°C

Humidity	82%
Wind Speed	Calm
Barometer	30.01 in (1015.4 mb)
Dewpoint	74°F (23°C)
Visibility	9.00 mi
Heat Index	85°F (29°C)
Last update	30 Jul 7:53 am EDT

More Information:

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

Extended Forecast for

Princeton North NJ

Heat Advisory July 30, 08:26am until July 30, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory July 30, 08:26am until July 30, 08:00pm
NOW until 8:00pm Wed
Heat Advisory
Today
High: 98 °F
Hot
Tonight
Low: 73 °F
Slight Chance
T-storms then
Mostly Clear
Thursday
High: 87 °F
Chance
T-storms then
Heavy Rain
Thursday Night
Low: 64 °F
Heavy Rain
Friday
High: 71 °F
Showers
Friday Night
Low: 58 °F
Chance
Showers
Saturday
High: 79 °F
Sunny
Saturday Night
Low: 57 °F
Mostly Clear

Detailed Forecast

Today

Sunny and hot, with a high near 98. Heat index values as high as 103. Calm wind becoming southwest around 5 mph in the afternoon.

Tonight

A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers and thunderstorms after 5am. Mostly clear, with a low around 73. Calm wind. Chance of precipitation is 20%.

Thursday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 87. East wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 64. Northeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Friday

Showers and possibly a thunderstorm. High near 71. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Friday Night

A chance of showers before 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday

Sunny, with a high near 79.

Saturday Night

Mostly clear, with a low around 57.

Sunday

Sunny, with a high near 83.

Sunday Night

Mostly clear, with a low around 58.

Monday

Sunny, with a high near 85.

Monday Night

Partly cloudy, with a low around 60.