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.

Fair

77°F

25°C

Humidity 48%
Wind Speed SW 8 mph
Barometer 29.74 in (1006.3 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 16 Apr 8:53 pm EDT
Extended Forecast for

Lambertville NJ

  • Tonight

    Tonight: A slight chance of showers before 10pm, then a slight chance of showers after 4am. Mostly cloudy, with a low around 65. Southwest wind around 5 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: A chance of showers, mainly after 4pm. Mostly sunny, with a high near 80. Northwest wind around 5 mph. Chance of precipitation is 30%.

    High: 80 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55. North wind around 5 mph becoming east after midnight.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 74. Southeast wind 5 to 10 mph.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 53. Southeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 59. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 59 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before 8pm. Partly cloudy, with a low around 36. Chance of precipitation is 60%.

    Low: 36 °F

    Showers
    Likely then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers before 10pm, then a slight chance of showers after 4am. Mostly cloudy, with a low around 65. Southwest wind around 5 mph becoming northwest after midnight. Chance of precipitation is 20%.
Friday
A chance of showers, mainly after 4pm. Mostly sunny, with a high near 80. Northwest wind around 5 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 55. North wind around 5 mph becoming east after midnight.
Saturday
Mostly sunny, with a high near 74. Southeast wind 5 to 10 mph.
Saturday Night
A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 53. Southeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and possibly a thunderstorm. High near 59. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers likely, mainly before 8pm. Partly cloudy, with a low around 36. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 49.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Sunny, with a high near 58.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Partly sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lambertville NJ
 40.35°N 74.93°W (Elev. 387 ft)
Last Update:
4:10 pm EDT Apr 16, 2026
Forecast Valid:
9pm EDT Apr 16, 2026-6pm EDT Apr 23, 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