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

36°F

2°C

Humidity 97%
Wind Speed E 5 mph
Barometer 30.30 in (1025.7 mb)
Dewpoint 35°F (2°C)
Visibility 3.00 mi
Wind Chill32°F (0°C)
Last update 7 Mar 3:53 am EST
Extended Forecast for

Lawrenceville NJ

  • Overnight

    Overnight: A slight chance of rain. Patchy fog. Otherwise, cloudy, with a low around 37. Calm wind. Chance of precipitation is 20%.

    Low: 37 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Saturday

    Saturday: A chance of rain before 7am. Patchy fog between 11am and noon. Otherwise, cloudy, with a high near 50. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 50 °F

    Chance Rain
    and Patchy
    Fog then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: Showers likely, mainly after 1am. Mostly cloudy, with a temperature rising to around 56 by 5am. Southwest wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F⇑

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers before 1pm. Mostly cloudy, with a high near 68. West wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. West wind around 5 mph becoming calm in the evening.

    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: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A slight chance of rain. Patchy fog. Otherwise, cloudy, with a low around 37. Calm wind. Chance of precipitation is 20%.
Saturday
A chance of rain before 7am. Patchy fog between 11am and noon. Otherwise, cloudy, with a high near 50. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
Showers likely, mainly after 1am. Mostly cloudy, with a temperature rising to around 56 by 5am. Southwest wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of showers before 1pm. Mostly cloudy, with a high near 68. West wind around 10 mph, with gusts as high as 25 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 becoming calm in the evening.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Mostly cloudy, with a low around 53.
Wednesday
A chance of showers. Cloudy, with a high near 76. Chance of precipitation is 40%.
Wednesday Night
Showers likely. Cloudy, with a low around 50. Chance of precipitation is 70%.
Thursday
A chance of showers. Cloudy, with a high near 62. Breezy. Chance of precipitation is 50%.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Mostly cloudy, 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:
4:09 am EST Mar 7, 2026
Forecast Valid:
4am EST Mar 7, 2026-6pm EDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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