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.

Fog/Mist

37°F

3°C

Humidity 96%
Wind Speed E 7 mph
Barometer 29.73 in (1006.5 mb)
Dewpoint 36°F (2°C)
Visibility 1.50 mi
Wind Chill32°F (0°C)
Last update 6 Jan 8:53 pm EST
Extended Forecast for

Yardley PA

  • Tonight

    Tonight: A slight chance of rain before 11pm. Widespread fog after 11pm. Otherwise, mostly cloudy, with a low around 36. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    Rain and Fog
    then Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 50. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 50 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 31. West wind around 5 mph becoming calm after midnight.

    Low: 31 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 49. Calm wind becoming west around 5 mph.

    High: 49 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely. Cloudy, with a high near 56. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely, mainly after 1am. Cloudy, with a low around 47. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers. High near 56. Chance of precipitation is 90%.

    High: 56 °F

    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly before 1am. Cloudy, with a low around 39. Chance of precipitation is 70%.

    Low: 39 °F

    Showers
    Likely

Detailed Forecast

Tonight
A slight chance of rain before 11pm. Widespread fog after 11pm. Otherwise, mostly cloudy, with a low around 36. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 50. West wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 31. West wind around 5 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 49. Calm wind becoming west around 5 mph.
Thursday Night
Mostly cloudy, with a low around 34. Calm wind.
Friday
Showers likely. Cloudy, with a high near 56. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers likely, mainly after 1am. Cloudy, with a low around 47. Chance of precipitation is 60%.
Saturday
Showers. High near 56. Chance of precipitation is 90%.
Saturday Night
Showers likely, mainly before 1am. Cloudy, with a low around 39. Chance of precipitation is 70%.
Sunday
A chance of showers before 1pm. Partly sunny, with a high near 48. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 29.
Monday
Sunny, with a high near 41.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Partly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Yardley PA
 40.25°N 74.84°W (Elev. 69 ft)
Last Update:
4:13 pm EST Jan 6, 2026
Forecast Valid:
9pm EST Jan 6, 2026-6pm EST Jan 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation