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

82°F

28°C

Humidity	72%
Wind Speed	SW 3 mph
Barometer	29.98 in (1014.3 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	87°F (31°C)
Last update	30 Jul 10:53 pm EDT

More Information:

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

Extended Forecast for

Plainsboro NJ

Flood Watch July 31, 02:00pm until August 1, 06:00am

Click here for hazard details and duration

Flood Watch

Tonight
Low: 73 °F
Mostly Clear
Thursday
High: 86 °F
Chance
T-storms then
Heavy Rain
Thursday Night
Low: 63 °F
Heavy Rain
Friday
High: 71 °F
Showers
Friday Night
Low: 59 °F
Chance
Showers
Saturday
High: 80 °F
Sunny
Saturday Night
Low: 57 °F
Mostly Clear
Sunday
High: 83 °F
Sunny
Sunday Night
Low: 60 °F
Partly Cloudy

Detailed Forecast

Tonight

Mostly clear, with a low around 73. Calm wind.

Thursday

A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 5pm, then showers and thunderstorms likely after 5pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 86. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between 1 and 2 inches possible.

Thursday Night

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 8pm. Some of the storms could produce heavy rainfall. Low around 63. Northeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

Friday

Showers and possibly a thunderstorm, mainly before 2pm, then a chance of showers and thunderstorms after 2pm. High near 71. Northeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night

A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 59. North wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Sunny, with a high near 80.

Saturday Night

Mostly clear, with a low around 57.

Sunday

Sunny, with a high near 83.

Sunday Night

Partly cloudy, with a low around 60.

Monday

Mostly sunny, with a high near 84.

Monday Night

Partly cloudy, with a low around 61.