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

33°F

1°C

Humidity 48%
Wind Speed NW 7 mph
Barometer 30.07 in (1017.8 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 13 Mar 2:53 am EDT
Extended Forecast for

Tullytown PA

  • Overnight

    Overnight: Clear, with a low around 30. West wind around 5 mph.

    Low: 30 °F

    Clear

  • Friday

    Friday: Increasing clouds, with a high near 50. Light southwest wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 30 mph.

    High: 50 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40. South wind around 15 mph, with gusts as high as 30 mph.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 53. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 53 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37. West wind around 5 mph becoming calm in the evening.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 54.

    High: 54 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers, mainly after 2am. Low around 46. Chance of precipitation is 100%.

    Low: 46 °F

    Chance
    Showers then
    Showers

  • Monday

    Monday: Showers, with thunderstorms also possible after 2pm. High near 68. Breezy. Chance of precipitation is 90%.

    High: 68 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 36. Breezy. Chance of precipitation is 80%.

    Low: 36 °F

    Showers and
    Breezy

Detailed Forecast

Overnight
Clear, with a low around 30. West wind around 5 mph.
Friday
Increasing clouds, with a high near 50. Light southwest wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 30 mph.
Friday Night
Partly cloudy, with a low around 40. South wind around 15 mph, with gusts as high as 30 mph.
Saturday
Sunny, with a high near 53. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.
Saturday Night
Mostly cloudy, with a low around 37. West wind around 5 mph becoming calm in the evening.
Sunday
Mostly cloudy, with a high near 54.
Sunday Night
Showers, mainly after 2am. Low around 46. Chance of precipitation is 100%.
Monday
Showers, with thunderstorms also possible after 2pm. High near 68. Breezy. Chance of precipitation is 90%.
Monday Night
Showers and possibly a thunderstorm. Low around 36. Breezy. Chance of precipitation is 80%.
Tuesday
A chance of showers before 8am. Partly sunny, with a high near 46. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Sunny, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Mostly cloudy, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tullytown PA
 40.12°N 74.83°W (Elev. 13 ft)
Last Update:
2:24 am EDT Mar 13, 2026
Forecast Valid:
3am EDT Mar 13, 2026-6pm EDT Mar 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