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

38°F

3°C

Humidity 97%
Wind Speed NE 5 mph
Barometer 29.69 in (1004.9 mb)
Dewpoint 37°F (3°C)
Visibility 1.00 mi
Wind Chill34°F (1°C)
Last update 6 Jan 10:53 pm EST
Extended Forecast for

Washington Crossing PA

  • Tonight

    Tonight: Widespread fog. Otherwise, mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 49. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 49 °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 48. Calm wind.

    High: 48 °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 55. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely, mainly after 1am. Cloudy, with a low around 46. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers. High near 55. Chance of precipitation is 90%.

    High: 55 °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
Widespread fog. Otherwise, mostly cloudy, with a low around 36. Calm wind.
Wednesday
Mostly sunny, with a high near 49. 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 48. Calm wind.
Thursday Night
Mostly cloudy, with a low around 34. Calm wind.
Friday
Showers likely. Cloudy, with a high near 55. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers likely, mainly after 1am. Cloudy, with a low around 46. Chance of precipitation is 60%.
Saturday
Showers. High near 55. 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 47. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Sunny, with a high near 41.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Washington Crossing PA
 40.3°N 74.86°W (Elev. 141 ft)
Last Update:
4:13 pm EST Jan 6, 2026
Forecast Valid:
11pm EST Jan 6, 2026-6pm EST Jan 13, 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