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.

Fog/Mist

41°F

5°C

Humidity 96%
Wind Speed E 15 mph
Barometer 30.18 in (1021.6 mb)
Dewpoint 40°F (4°C)
Visibility 5.00 mi
Wind Chill33°F (1°C)
Last update 5 Mar 7:53 pm EST
Extended Forecast for

Lawrenceville NJ

  • Tonight

    Tonight: Rain, mainly before 4am. Areas of fog. Low around 36. Northeast wind around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Rain and
    Areas Fog

  • Friday

    Friday: Patchy fog between 10am and 11am. Otherwise, cloudy, with a high near 44. Northeast wind around 5 mph.

    High: 44 °F

    Patchy Fog
    then Cloudy

  • Friday Night

    Friday Night: A chance of rain, mainly after 1am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 37. East wind around 5 mph becoming calm. Chance of precipitation is 40%.

    Low: 37 °F

    Chance Rain
    and Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, cloudy, with a high near 59. Calm wind becoming south around 5 mph in the afternoon.

    High: 59 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Showers likely. Patchy fog before 1am. Otherwise, mostly cloudy, with a low around 50. Southwest wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: A slight chance of showers. Partly sunny, with a high near 67. Chance of precipitation is 20%.

    High: 67 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
Rain, mainly before 4am. Areas of fog. Low around 36. Northeast wind around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Patchy fog between 10am and 11am. Otherwise, cloudy, with a high near 44. Northeast wind around 5 mph.
Friday Night
A chance of rain, mainly after 1am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 37. East wind around 5 mph becoming calm. Chance of precipitation is 40%.
Saturday
Patchy fog before 8am. Otherwise, cloudy, with a high near 59. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Showers likely. Patchy fog before 1am. Otherwise, mostly cloudy, with a low around 50. Southwest wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A slight chance of showers. Partly sunny, with a high near 67. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Mostly sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Mostly cloudy, with a low around 53.
Wednesday
A chance of rain. Mostly cloudy, with a high near 74. Chance of precipitation is 30%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Thursday
A chance of rain. Mostly cloudy, with a high near 58. Chance of precipitation is 50%.
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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:
4:09 pm EST Mar 5, 2026
Forecast Valid:
8pm EST Mar 5, 2026-6pm EDT Mar 12, 2026
 
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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