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

59°F

15°C

Humidity 100%
Wind Speed Calm
Barometer 29.55 in (999.8 mb)
Dewpoint 59°F (15°C)
Visibility 0.25 mi
Last update 12 Mar 3:53 am EDT
Extended Forecast for

Lawrenceville NJ

  • Overnight

    Overnight: A chance of showers, mainly after 5am. Mostly cloudy, with a steady temperature around 65. Southwest 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.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: Rain before 5pm, then rain and snow likely. Temperature falling to around 36 by 3pm. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 57 °F⇓

    Breezy. Rain
    then
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of rain and snow, mainly 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.

    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

Detailed Forecast

Overnight
A chance of showers, mainly after 5am. Mostly cloudy, with a steady temperature around 65. Southwest 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.
Thursday
Rain before 5pm, then rain and snow likely. Temperature falling to around 36 by 3pm. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Thursday Night
A chance of rain and snow, mainly 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.
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 and snow likely. 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
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ABOUT THIS FORECAST

 
Point Forecast:
Lawrenceville NJ
 40.28°N 74.71°W (Elev. 82 ft)
Last Update:
4:09 am EDT Mar 12, 2026
Forecast Valid:
4am EDT Mar 12, 2026-6pm EDT Mar 18, 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