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.

Partly Cloudy

53°F

12°C

Humidity 100%
Wind Speed Calm
Barometer 29.96 in (1013.8 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 13 Oct 4:53 am EDT
Extended Forecast for

Tullytown PA

  • Today

    Today: Mostly sunny, with a high near 79. Light west wind becoming southwest 5 to 10 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. Southwest wind 5 to 10 mph.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 83. West wind 5 to 10 mph.

    High: 83 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58. West wind around 5 mph becoming north after midnight.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 69. North wind around 5 mph becoming calm in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.

    High: 75 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely before 8pm. Partly cloudy, with a low around 45. Chance of precipitation is 60%.

    Low: 45 °F

    Showers
    Likely then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 55. Breezy.

    High: 55 °F

    Sunny and
    Breezy

Detailed Forecast

Today
Mostly sunny, with a high near 79. Light west wind becoming southwest 5 to 10 mph in the afternoon.
Tonight
Mostly clear, with a low around 65. Southwest wind 5 to 10 mph.
Wednesday
Increasing clouds, with a high near 83. West wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 58. West wind around 5 mph becoming north after midnight.
Thursday
Mostly sunny, with a high near 69. North wind around 5 mph becoming calm in the afternoon.
Thursday Night
Showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Friday Night
Showers likely before 8pm. Partly cloudy, with a low around 45. Chance of precipitation is 60%.
Saturday
Sunny, with a high near 55. Breezy.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 40.
Monday
Sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tullytown PA
 40.16°N 74.82°W (Elev. 72 ft)
Last Update:
4:09 am EDT Oct 13, 2026
Forecast Valid:
5am EDT Oct 13, 2026-6pm EDT Oct 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