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Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Langhorne PA

Dense Fog Advisory until March 10, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until March 10, 10:00am

    NOW until 10:00am Tue

    Dense Fog Advisory

  • Overnight

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Areas of dense fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 78. Southwest wind 5 to 10 mph.

    High: 78 °F

    Areas Dense
    Fog then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52. South wind around 5 mph.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers after 2pm. Increasing clouds, with a high near 76. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 76 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, with thunderstorms also possible after 11pm. Mostly cloudy, with a low around 57. South wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, mainly before 2pm. Cloudy, with a high near 60. Breezy. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Showers
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: A chance of showers before 8pm. Partly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 45. Southwest wind around 5 mph.
Tuesday
Areas of dense fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 78. Southwest wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 52. South wind around 5 mph.
Wednesday
A chance of showers after 2pm. Increasing clouds, with a high near 76. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers likely, with thunderstorms also possible after 11pm. Mostly cloudy, with a low around 57. South wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely, mainly before 2pm. Cloudy, with a high near 60. Breezy. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A chance of showers before 8pm. Partly cloudy, with a low around 31. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 50.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Mostly sunny, with a high near 52.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
Cloudy, with a high near 59.
Sunday Night
Rain. Low around 46. Chance of precipitation is 90%.
Monday
Rain. High near 58. Chance of precipitation is 80%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Langhorne PA
 40.17°N 74.88°W (Elev. 98 ft)
Last Update:
3:06 am EDT Mar 10, 2026
Forecast Valid:
3am EDT Mar 10, 2026-6pm EDT Mar 16, 2026
 
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