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Widespread Showers and Thunderstorms in Southern California and the Southern Plains into the Mississippi Valley

Isolated strong to severe thunderstorms and widespread heavy rainfall are possible across the southern Plains into Arkansas. Widespread showers with a slight chance of thunderstorms are possible across southern California. Urban flooding, rock and mudslides as well as minor debris flows near burn scars are possible. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Overcast

43°F

6°C

Humidity 80%
Wind Speed Calm
Barometer 30.09 in (1018.4 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 21 Nov 3:53 am EST
Extended Forecast for

Trenton, Mercer County Airport NJ

  • Today

    Today: Patchy fog between 7am and 8am. Otherwise, cloudy, with a high near 54. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 54 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: Rain, mainly after 1am. Low around 43. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Chance Rain
    then Rain

  • Saturday

    Saturday: Rain likely, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 52. Northwest wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Rain Likely
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30. Northwest wind around 5 mph.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 50. West wind 5 to 10 mph.

    High: 50 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain after 1pm. Cloudy, with a high near 57. Chance of precipitation is 40%.

    High: 57 °F

    Cloudy then
    Chance Rain

Detailed Forecast

Today
Patchy fog between 7am and 8am. Otherwise, cloudy, with a high near 54. Light southwest wind increasing to 5 to 10 mph in the morning.
Tonight
Rain, mainly after 1am. Low around 43. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain likely, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 52. Northwest wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Partly cloudy, with a low around 30. Northwest wind around 5 mph.
Sunday
Mostly sunny, with a high near 50. West wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 54.
Monday Night
Mostly cloudy, with a low around 37.
Tuesday
A chance of rain after 1pm. Cloudy, with a high near 57. Chance of precipitation is 40%.
Tuesday Night
Rain, mainly before 1am. Low around 48. Chance of precipitation is 80%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 62. Chance of precipitation is 40%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 42. Chance of precipitation is 50%.
Thanksgiving Day
Partly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Trenton, Mercer County Airport NJ
 40.27°N 74.8°W (Elev. 157 ft)
Last Update:
4:09 am EST Nov 21, 2025
Forecast Valid:
4am EST Nov 21, 2025-6pm EST Nov 27, 2025
 
Forecast Discussion
 
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Additional Resources

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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