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

72°F

22°C

Humidity 59%
Wind Speed Vrbl 7 mph
Barometer 29.87 in (1010.5 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 17 Apr 9:53 am EDT
Extended Forecast for

Tullytown PA

  • Today

    Today: Isolated showers between 1pm and 2pm, then scattered showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Northwest wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Partly Sunny
    then
    Scattered
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. East wind around 5 mph.

    Low: 56 °F

    Mostly Cloudy

  • Saturday

    Saturday: Cloudy, then gradually becoming mostly sunny, with a high near 74. East wind 5 to 10 mph.

    High: 74 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: A chance of showers, with thunderstorms also possible after 5am. Mostly cloudy, with a low around 52. Southeast wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers after 8am. High near 60. Northwest wind 10 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before 8pm. Partly cloudy, with a low around 39. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

Detailed Forecast

Today
Isolated showers between 1pm and 2pm, then scattered showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Northwest wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly cloudy, with a low around 56. East wind around 5 mph.
Saturday
Cloudy, then gradually becoming mostly sunny, with a high near 74. East wind 5 to 10 mph.
Saturday Night
A chance of showers, with thunderstorms also possible after 5am. Mostly cloudy, with a low around 52. Southeast wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms, then showers after 8am. High near 60. Northwest wind 10 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers likely, mainly before 8pm. Partly cloudy, with a low around 39. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 53.
Monday Night
Mostly clear, with a low around 32.
Tuesday
Sunny, with a high near 58.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tullytown PA
 40.14°N 74.83°W (Elev. 39 ft)
Last Update:
6:04 am EDT Apr 17, 2026
Forecast Valid:
10am EDT Apr 17, 2026-6pm EDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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