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.

Overcast

36°F

2°C

Humidity 39%
Wind Speed W 16 G 30 mph
Barometer 29.97 in (1014.5 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 17 Mar 5:53 pm EDT
Extended Forecast for

Lawrenceville NJ

  • This Afternoon

    This Afternoon: Scattered flurries. Mostly cloudy, with a high near 40. Breezy, with a west wind around 20 mph, with gusts as high as 35 mph.

    High: 40 °F

    Scattered
    Flurries and
    Breezy

  • Tonight

    Tonight: Scattered flurries before 11pm. Mostly cloudy during the early evening, 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. 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

Detailed Forecast

This Afternoon
Scattered flurries. Mostly cloudy, with a high near 40. Breezy, with a west wind around 20 mph, with gusts as high as 35 mph.
Tonight
Scattered flurries before 11pm. Mostly cloudy during the early evening, 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. 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
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ABOUT THIS FORECAST

 
Point Forecast:
Lawrenceville NJ
 40.28°N 74.71°W (Elev. 82 ft)
Last Update:
4:11 pm EDT Mar 17, 2026
Forecast Valid:
5pm EDT Mar 17, 2026-6pm EDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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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