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 Rain

40°F

4°C

Humidity 79%
Wind Speed NW 10 mph
Barometer 29.80 in (1008.6 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 12 Mar 12:53 pm EDT
Extended Forecast for

Lawrenceville NJ

  • This Afternoon

    This Afternoon: Rain before 5pm, then rain and snow likely. High near 57. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.

    High: 57 °F

    Rain/Snow

  • Tonight

    Tonight: A chance of rain and snow before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 29. West wind 5 to 10 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance
    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Mostly sunny, with a high near 49. Light southwest wind becoming south 10 to 15 mph in the morning.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 53. West wind 10 to 15 mph.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 53.

    High: 53 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 46. Chance of precipitation is 80%.

    Low: 46 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain. High near 66. Chance of precipitation is 90%.

    High: 66 °F

    Rain

Detailed Forecast

This Afternoon
Rain before 5pm, then rain and snow likely. High near 57. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A chance of rain and snow before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 29. West wind 5 to 10 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Friday
Mostly sunny, with a high near 49. Light southwest wind becoming south 10 to 15 mph in the morning.
Friday Night
Partly cloudy, with a low around 38. South wind around 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 53. West wind 10 to 15 mph.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
Cloudy, with a high near 53.
Sunday Night
Rain, mainly after 2am. Low around 46. Chance of precipitation is 80%.
Monday
Rain. High near 66. Chance of precipitation is 90%.
Monday Night
Rain likely before 2am, then a chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 60%.
Tuesday
A chance of rain and snow. Mostly sunny, with a high near 40. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Sunny, with a high near 40.
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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:
6:09 am EDT Mar 12, 2026
Forecast Valid:
1pm EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation