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.

Overcast

63°F

17°C

Humidity 81%
Wind Speed W 8 mph
Barometer 29.69 in (1004.7 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 27 Mar 2:53 am EDT
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Overnight

    Overnight: Rain. Low around 51. West wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Rain

  • Friday

    Friday: Rain before noon, then a slight chance of rain after 3pm. Temperature falling to around 49 by 2pm. North wind 5 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F⇓

    Rain then
    Slight Chance
    Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 28. Calm wind becoming north around 5 mph after midnight.

    Low: 28 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 43. Northwest wind 10 to 15 mph.

    High: 43 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 26. Northwest wind around 5 mph becoming calm in the evening.

    Low: 26 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.

    Low: 47 °F

    Chance
    Showers

Detailed Forecast

Overnight
Rain. Low around 51. West wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain before noon, then a slight chance of rain after 3pm. Temperature falling to around 49 by 2pm. North wind 5 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Mostly cloudy, with a low around 28. Calm wind becoming north around 5 mph after midnight.
Saturday
Sunny, with a high near 43. Northwest wind 10 to 15 mph.
Saturday Night
Partly cloudy, with a low around 26. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 41.
Monday
Partly sunny, with a high near 62.
Monday Night
A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 68. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 74. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.28°N 74.83°W (Elev. 200 ft)
Last Update:
1:55 am EDT Mar 27, 2026
Forecast Valid:
3am EDT Mar 27, 2026-6pm EDT Apr 2, 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