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

37°F

3°C

Humidity 76%
Wind Speed E 12 mph
Barometer 30.02 in (1016.2 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 19 Feb 4:53 pm EST
Extended Forecast for

Lawrenceville NJ

  • This Afternoon

    This Afternoon: A chance of rain. Cloudy, with a high near 44. East wind around 10 mph. Chance of precipitation is 30%.

    High: 44 °F

    Chance Rain

  • Tonight

    Tonight: A chance of rain before 1am, then rain likely after 4am. Cloudy, with a low around 36. Northeast wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance Rain
    then Rain
    Likely

  • Friday

    Friday: Rain before 4pm, then a slight chance of rain after 5pm. Patchy fog. High near 44. East wind around 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Rain and
    Patchy Fog
    then Rain
    Likely and
    Patchy Fog

  • Friday Night

    Friday Night: A slight chance of rain between 7pm and 1am. Cloudy, then gradually becoming partly cloudy, with a low around 34. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 34 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Partly sunny, with a high near 49. West wind around 5 mph.

    High: 49 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of rain and snow after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday

    Sunday: Snow. High near 38. Chance of precipitation is 80%.

    High: 38 °F

    Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before 1am. Cloudy, with a low around 29. Chance of precipitation is 70%.

    Low: 29 °F

    Snow Likely

  • Monday

    Monday: A chance of snow before 1pm. Mostly cloudy, with a high near 39. Chance of precipitation is 30%.

    High: 39 °F

    Chance Snow

Detailed Forecast

This Afternoon
A chance of rain. Cloudy, with a high near 44. East wind around 10 mph. Chance of precipitation is 30%.
Tonight
A chance of rain before 1am, then rain likely after 4am. Cloudy, with a low around 36. Northeast wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain before 4pm, then a slight chance of rain after 5pm. Patchy fog. High near 44. East wind around 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A slight chance of rain between 7pm and 1am. Cloudy, then gradually becoming partly cloudy, with a low around 34. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 49. West wind around 5 mph.
Saturday Night
A chance of rain and snow after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Snow. High near 38. Chance of precipitation is 80%.
Sunday Night
Snow likely, mainly before 1am. Cloudy, with a low around 29. Chance of precipitation is 70%.
Monday
A chance of snow before 1pm. Mostly cloudy, with a high near 39. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
Mostly sunny, with a high near 37.
Tuesday Night
Mostly cloudy, with a low around 20.
Wednesday
Mostly cloudy, with a high near 43.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.
Thursday
A chance of rain. Partly sunny, with a high near 48.
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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:
4:16 pm EST Feb 19, 2026
Forecast Valid:
5pm EST Feb 19, 2026-6pm EST Feb 26, 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