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

48°F

9°C

Humidity 68%
Wind Speed W 14 G 20 mph
Barometer 29.73 in (1006.4 mb)
Dewpoint 38°F (3°C)
Visibility 8.00 mi
Wind Chill42°F (6°C)
Last update 7 Jan 9:53 am EST
Extended Forecast for

Tullytown PA

  • Today

    Today: Mostly sunny, with a high near 51. West wind around 15 mph, with gusts as high as 30 mph.

    High: 51 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 33. West wind 5 to 10 mph.

    Low: 33 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 50. West wind around 5 mph becoming calm.

    High: 50 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 57. South wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers. Cloudy, with a low around 49. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers. High near 60. Chance of precipitation is 90%.

    High: 60 °F

    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 44. Chance of precipitation is 80%.

    Low: 44 °F

    Showers

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 52. Chance of precipitation is 40%.

    High: 52 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 51. West wind around 15 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 33. West wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 50. West wind around 5 mph becoming calm.
Thursday Night
Mostly cloudy, with a low around 34. Calm wind.
Friday
A chance of showers. Mostly cloudy, with a high near 57. South wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of showers. Cloudy, with a low around 49. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Showers. High near 60. Chance of precipitation is 90%.
Saturday Night
Showers. Low around 44. Chance of precipitation is 80%.
Sunday
A chance of showers. Mostly cloudy, with a high near 52. Chance of precipitation is 40%.
Sunday Night
Partly cloudy, with a low around 30.
Monday
Sunny, with a high near 40.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 44.
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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:
5:57 am EST Jan 7, 2026
Forecast Valid:
10am EST Jan 7, 2026-6pm EST Jan 13, 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