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.

Mostly Cloudy

75°F

24°C

Humidity 54%
Wind Speed W 10 G 20 mph
Barometer 29.92 in (1012.4 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 14 Apr 11:53 pm EDT
Extended Forecast for

Tullytown PA

  • Overnight

    Overnight: Partly cloudy, with a low around 65. Southwest wind around 5 mph.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 92. Southwest wind 5 to 15 mph.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 68. Southwest wind 5 to 10 mph.

    Low: 68 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 92. Southwest wind 5 to 10 mph.

    High: 92 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers. Mostly cloudy, with a low around 67. Southwest wind around 5 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 65. Southwest wind around 5 mph.
Wednesday
Sunny, with a high near 92. Southwest wind 5 to 15 mph.
Wednesday Night
Increasing clouds, with a low around 68. Southwest wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 92. Southwest wind 5 to 10 mph.
Thursday Night
A slight chance of showers. Mostly cloudy, with a low around 67. Southwest wind around 5 mph. Chance of precipitation is 20%.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Partly cloudy, with a low around 58.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Mostly cloudy, with a low around 56.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 41. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tullytown PA
 40.12°N 74.83°W (Elev. 13 ft)
Last Update:
6:17 pm EDT Apr 14, 2026
Forecast Valid:
12am EDT Apr 15, 2026-6pm EDT Apr 21, 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