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

44°F

7°C

Humidity 47%
Wind Speed E 14 G 22 mph
Barometer 30.42 in (1029.7 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 15 Mar 11:53 am EDT
Extended Forecast for

Lawrenceville NJ

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 52. Southeast wind around 10 mph, with gusts as high as 20 mph.

    High: 52 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of rain, then rain and possibly a thunderstorm after 2am. Low around 44. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Mostly Cloudy
    then Rain

  • Monday

    Monday: Showers and thunderstorms before 4pm, then showers and possibly a thunderstorm, mainly after 4pm. Some of the storms could be severe. High near 67. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers
    Likely then
    Severe
    Thunderstorms
    and Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Some of the storms could be severe. Low around 32. Breezy, with a south wind 15 to 25 mph becoming west after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 32 °F

    Breezy.
    Severe
    Thunderstorms
    then Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 40. West wind around 15 mph, with gusts as high as 30 mph.

    High: 40 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 52. Southeast wind around 10 mph, with gusts as high as 20 mph.
Tonight
A chance of rain, then rain and possibly a thunderstorm after 2am. Low around 44. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers and thunderstorms before 4pm, then showers and possibly a thunderstorm, mainly after 4pm. Some of the storms could be severe. High near 67. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Some of the storms could be severe. Low around 32. Breezy, with a south wind 15 to 25 mph becoming west after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Mostly sunny, with a high near 40. West wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 22.
Wednesday
Mostly sunny, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Partly sunny, with a high near 51.
Thursday Night
Mostly cloudy, with a low around 32.
Friday
Partly sunny, with a high near 55.
Friday Night
A chance of rain. Mostly cloudy, with a low around 36. Chance of precipitation is 40%.
Saturday
A chance of rain. Partly sunny, with a high near 53. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lawrenceville NJ
 40.31°N 74.71°W (Elev. 98 ft)
Last Update:
12:01 pm EDT Mar 15, 2026
Forecast Valid:
12pm EDT Mar 15, 2026-6pm EDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation