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

Threats For Heavy Rain and Severe Thunderstorms Continue in the Plains; Fire Weather Conditions Worsen in the Southwest

On Monday and Tuesday, the focus for heavy rain and severe thunderstorms will continue in the Plains and central Mississippi River Valley. Meanwhile, hot conditions and Critical Fire Weather looms over the Great Basin and Southwest U.S. through midweek. Read More >

Current conditions at

Trenton, Mercer County Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Overcast

59°F

15°C

Humidity 87%
Wind Speed NE 5 mph
Barometer 30.16 in (1020.7 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 15 Jun 10:53 pm EDT
Extended Forecast for

Plainsboro NJ

  • Tonight

    Tonight: A chance of showers, mainly before 2am. Cloudy, with a low around 59. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of showers before 11am, then a slight chance of showers after 4pm. Cloudy, with a high near 68. East wind around 5 mph. Chance of precipitation is 20%.

    High: 68 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Monday Night

    Monday Night: Cloudy, with a low around 60. East wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Cloudy

  • Tuesday

    Tuesday: A chance of showers after 2pm. Cloudy, with a high near 74. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 74 °F

    Cloudy then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Cloudy, with a low around 64. Southeast wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Showers
    Likely then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 8pm. Mostly clear, with a low around 69. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms then
    Mostly Clear

  • Juneteenth

    Juneteenth: A chance of showers and thunderstorms after 2pm. Sunny, with a high near 92. Chance of precipitation is 40%.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers, mainly before 2am. Cloudy, with a low around 59. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A slight chance of showers before 11am, then a slight chance of showers after 4pm. Cloudy, with a high near 68. East wind around 5 mph. Chance of precipitation is 20%.
Monday Night
Cloudy, with a low around 60. East wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers after 2pm. Cloudy, with a high near 74. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Cloudy, with a low around 64. Southeast wind around 5 mph becoming calm. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of thunderstorms before 8pm. Mostly clear, with a low around 69. Chance of precipitation is 30%.
Juneteenth
A chance of showers and thunderstorms after 2pm. Sunny, with a high near 92. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Friday
Sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
Mostly sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Plainsboro NJ
 40.34°N 74.59°W (Elev. 89 ft)
Last Update:
4:13 pm EDT Jun 15, 2025
Forecast Valid:
11pm EDT Jun 15, 2025-6pm EDT Jun 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