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

62°F

17°C

Humidity 34%
Wind Speed SW 5 mph
Barometer 30.08 in (1018.2 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 12 May 7:53 pm EDT
Extended Forecast for

Washington Crossing PA

  • Tonight

    Tonight: Increasing clouds, with a low around 50. Southwest wind around 5 mph becoming south after midnight.

    Low: 50 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 74. South wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 74 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 54. South wind 5 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Showers
    Likely then
    Showers

  • Thursday

    Thursday: Showers likely, mainly before 7am. Partly sunny, with a high near 67. West wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 48. Northwest wind around 5 mph.

    Low: 48 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 50. Southwest wind around 5 mph becoming south after midnight.
Wednesday
Mostly cloudy, with a high near 74. South wind 10 to 15 mph, with gusts as high as 30 mph.
Wednesday Night
Showers and possibly a thunderstorm. Low around 54. South wind 5 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely, mainly before 7am. Partly sunny, with a high near 67. West wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, with a low around 48. Northwest wind around 5 mph.
Friday
Mostly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
Sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
A chance of showers. Mostly sunny, with a high near 93. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Washington Crossing PA
 40.3°N 74.86°W (Elev. 141 ft)
Last Update:
4:08 pm EDT May 12, 2026
Forecast Valid:
7pm EDT May 12, 2026-6pm EDT May 19, 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