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.

Fair

24°F

-4°C

Humidity 88%
Wind Speed Calm
Barometer 30.22 in (1023.0 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 27 Dec 9:53 pm EST
Extended Forecast for

Washington Crossing PA

  • Tonight

    Tonight: Patchy fog between 11pm and midnight. Otherwise, partly cloudy, with a low around 20. Calm wind.

    Low: 20 °F

    Patchy Fog
    then Partly
    Cloudy

  • Sunday

    Sunday: A chance of rain, mainly after 5pm. Mostly cloudy, with a high near 37. Calm wind becoming southwest around 5 mph. Chance of precipitation is 30%.

    High: 37 °F

    Partly Sunny
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly after 7pm. Cloudy, with a temperature rising to around 40 by 4am. South wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F⇑

    Rain Likely

  • Monday

    Monday: Rain, mainly before 1pm. High near 55. West wind 5 to 15 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24. West wind around 15 mph, with gusts as high as 35 mph.

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 33. Breezy.

    High: 33 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog between 11pm and midnight. Otherwise, partly cloudy, with a low around 20. Calm wind.
Sunday
A chance of rain, mainly after 5pm. Mostly cloudy, with a high near 37. Calm wind becoming southwest around 5 mph. Chance of precipitation is 30%.
Sunday Night
Rain likely, mainly after 7pm. Cloudy, with a temperature rising to around 40 by 4am. South wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain, mainly before 1pm. High near 55. West wind 5 to 15 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Partly cloudy, with a low around 24. West wind around 15 mph, with gusts as high as 35 mph.
Tuesday
Partly sunny, with a high near 33. Breezy.
Tuesday Night
Mostly cloudy, with a low around 22.
Wednesday
Mostly sunny, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 24.
New Year's Day
A chance of snow. Mostly cloudy, with a high near 34. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Sunny, with a high near 31.
Friday Night
Partly cloudy, with a low around 17.
Saturday
Mostly sunny, with a high near 35.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Washington Crossing PA
 40.3°N 74.86°W (Elev. 141 ft)
Last Update:
4:11 pm EST Dec 27, 2025
Forecast Valid:
10pm EST Dec 27, 2025-6pm EST Jan 3, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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