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

39°F

4°C

Humidity 86%
Wind Speed E 8 mph
Barometer 30.40 in (1029.1 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 6 Mar 8:53 pm EST
Extended Forecast for

Lawrenceville NJ

  • Tonight

    Tonight: A slight chance of rain before 10pm, then a chance of rain after 1am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 37. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 37 °F

    Chance Rain
    and Patchy
    Fog

  • Saturday

    Saturday: A chance of rain before 7am. Areas of fog before 1pm, then patchy fog after 5pm. Otherwise, cloudy, with a high near 51. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 51 °F

    Chance Rain
    and Areas Fog
    then Patchy
    Fog

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 64. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. West wind around 5 mph.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 1am. Partly cloudy, with a low around 52. Chance of precipitation is 30%.

    Low: 52 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
A slight chance of rain before 10pm, then a chance of rain after 1am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 37. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
A chance of rain before 7am. Areas of fog before 1pm, then patchy fog after 5pm. Otherwise, cloudy, with a high near 51. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 64. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Partly cloudy, with a low around 40. West wind around 5 mph.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Sunny, with a high near 74.
Tuesday Night
A chance of showers after 1am. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 71. Chance of precipitation is 50%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Thursday
A chance of showers. Mostly cloudy, with a high near 52. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Mostly cloudy, with a high near 49.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lawrenceville NJ
 40.28°N 74.71°W (Elev. 82 ft)
Last Update:
4:09 pm EST Mar 6, 2026
Forecast Valid:
9pm EST Mar 6, 2026-6pm EDT Mar 13, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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