National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Plainsboro NJ

  • Tonight

    Tonight: Patchy fog. Otherwise, increasing clouds, with a low around 68. Southeast wind around 5 mph becoming calm.

    Low: 68 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 87. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 87 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. Southeast wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Southwest wind around 5 mph. Chance of precipitation is 20%.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 67. West wind around 5 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers

Detailed Forecast

Tonight
Patchy fog. Otherwise, increasing clouds, with a low around 68. Southeast wind around 5 mph becoming calm.
Saturday
Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 87. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 66. Southeast wind around 5 mph becoming calm in the evening.
Sunday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Southwest wind around 5 mph. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 67. West wind around 5 mph becoming northwest after midnight. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 78.
Monday Night
Mostly cloudy, with a low around 60.
Tuesday
Partly sunny, with a high near 77.
Tuesday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 77. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Plainsboro NJ
 40.34°N 74.59°W (Elev. 89 ft)
Last Update:
7:27 pm EDT Aug 15, 2025
Forecast Valid:
9pm EDT Aug 15, 2025-6pm EDT Aug 22, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation