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

66°F

19°C

Humidity 84%
Wind Speed Calm
Barometer 30.12 in (1019.1 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 18 May 2:53 am EDT
Extended Forecast for

Lambertville NJ

  • Overnight

    Overnight: Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. South wind around 5 mph.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Southwest wind 5 to 10 mph.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72. Southwest wind 5 to 10 mph.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm after 2pm. High near 92. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Sunny then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm. Low around 54. Chance of precipitation is 80%.

    Low: 54 °F

    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 66. Calm wind.
Monday
Sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 69. South wind around 5 mph.
Tuesday
Sunny, with a high near 95. Southwest wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 72. Southwest wind 5 to 10 mph.
Wednesday
Showers and possibly a thunderstorm after 2pm. High near 92. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 8pm. Low around 54. Chance of precipitation is 80%.
Thursday
Partly sunny, with a high near 71.
Thursday Night
Mostly cloudy, with a low around 50.
Friday
A chance of showers after 8am. Partly sunny, with a high near 67. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Saturday
Showers likely. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Sunday
A chance of showers. Mostly cloudy, with a high near 73. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lambertville NJ
 40.36°N 74.96°W (Elev. 230 ft)
Last Update:
4:09 pm EDT May 17, 2026
Forecast Valid:
3am EDT May 18, 2026-6pm EDT May 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