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

73°F

23°C

Humidity 74%
Wind Speed W 5 mph
Barometer 30.05 in (1016.9 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 25 May 5:53 pm EDT
Extended Forecast for

Tullytown PA

  • Tonight

    Tonight: Patchy fog between 10pm and 5am. Otherwise, mostly cloudy, with a low around 60. West wind around 5 mph becoming calm.

    Low: 60 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 7am. Otherwise, partly sunny, with a high near 82. Northeast wind around 5 mph becoming south in the afternoon.

    High: 82 °F

    Patchy Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 63. Southwest wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 2pm. Mostly cloudy, with a high near 82. West wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 82 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 62. West wind around 5 mph becoming north after midnight. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog between 10pm and 5am. Otherwise, mostly cloudy, with a low around 60. West wind around 5 mph becoming calm.
Tuesday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 82. Northeast wind around 5 mph becoming south in the afternoon.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 63. Southwest wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of showers before 2pm. Mostly cloudy, with a high near 82. West wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 62. West wind around 5 mph becoming north after midnight. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tullytown PA
 40.14°N 74.83°W (Elev. 39 ft)
Last Update:
4:08 pm EDT May 25, 2026
Forecast Valid:
5pm EDT May 25, 2026-6pm EDT Jun 1, 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