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

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Light Snow

30°F

-1°C

Humidity 72%
Wind Speed W 20 G 30 mph
Barometer 30.10 in (1019.0 mb)
Dewpoint 22°F (-6°C)
Visibility 5.00 mi
Wind Chill17°F (-8°C)
Last update 17 Mar 8:53 pm EDT
Extended Forecast for

Lawrenceville NJ

  • Tonight

    Tonight: Scattered flurries before 11pm. Mostly cloudy early, then gradual clearing, with a low around 23. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 23 °F

    Scattered
    Flurries

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 41. Northwest wind around 5 mph becoming calm.

    High: 41 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 51. South wind around 5 mph.

    High: 51 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of rain after 2am. Cloudy, with a low around 33. Southeast wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Friday

    Friday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A chance of rain after 2am. Mostly cloudy, with a low around 38. Chance of precipitation is 30%.

    Low: 38 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: A chance of rain before 8am. Partly sunny, with a high near 56. Chance of precipitation is 30%.

    High: 56 °F

    Chance Rain
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Scattered flurries before 11pm. Mostly cloudy early, then gradual clearing, with a low around 23. Northwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 41. Northwest wind around 5 mph becoming calm.
Wednesday Night
Partly cloudy, with a low around 26. Calm wind.
Thursday
Partly sunny, with a high near 51. South wind around 5 mph.
Thursday Night
A slight chance of rain after 2am. Cloudy, with a low around 33. Southeast wind around 5 mph becoming calm. Chance of precipitation is 20%.
Friday
Mostly cloudy, with a high near 55.
Friday Night
A chance of rain after 2am. Mostly cloudy, with a low around 38. Chance of precipitation is 30%.
Saturday
A chance of rain before 8am. Partly sunny, with a high near 56. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
Mostly cloudy, with a high near 62.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 30%.
Monday
Sunny, with a high near 53.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lawrenceville NJ
 40.28°N 74.71°W (Elev. 82 ft)
Last Update:
5:56 pm EDT Mar 17, 2026
Forecast Valid:
9pm EDT Mar 17, 2026-6pm EDT Mar 24, 2026
 
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