National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Overcast

29°F

-2°C

Humidity 92%
Wind Speed N 3 mph
Barometer 30.03 in (1016.5 mb)
Dewpoint 27°F (-3°C)
Visibility NA
Last update 18 Jan 4:53 am EST
Extended Forecast for

Lawrenceville NJ

Winter Weather Advisory January 18, 06:00am until January 18, 08:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: A chance of snow. Cloudy, with a low around 26. Calm wind. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 26 °F

    Chance Snow

  • Sunday

    Sunday: Snow, possibly mixed with rain, mainly before 1pm. High near 34. Calm wind becoming north around 5 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 34 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 18. West wind around 5 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 18 °F

    Snow Likely
    then Mostly
    Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 34. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 11. West wind around 10 mph.

    Low: 11 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 23.

    High: 23 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 6.

    Low: 6 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of snow. Cloudy, with a low around 26. Calm wind. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.
Sunday
Snow, possibly mixed with rain, mainly before 1pm. High near 34. Calm wind becoming north around 5 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Sunday Night
Snow likely, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 18. West wind around 5 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
M.L.King Day
Sunny, with a high near 34. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 11. West wind around 10 mph.
Tuesday
Sunny, with a high near 23.
Tuesday Night
Mostly clear, with a low around 6.
Wednesday
Mostly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 25.
Thursday
Mostly sunny, with a high near 37.
Thursday Night
Mostly clear, with a low around 16.
Friday
Mostly sunny, with a high near 32.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lawrenceville NJ
 40.28°N 74.71°W (Elev. 82 ft)
Last Update:
4:11 am EST Jan 18, 2026
Forecast Valid:
5am EST Jan 18, 2026-6pm EST Jan 24, 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