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

23°F

-5°C

Humidity 88%
Wind Speed W 5 mph
Barometer 30.22 in (1022.8 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 28 Dec 12:53 am EST
Extended Forecast for

Tullytown PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 22. Calm wind.

    Low: 22 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain after 3pm. Mostly cloudy, with a high near 39. Calm wind becoming southwest around 5 mph. Chance of precipitation is 20%.

    High: 39 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: A chance of rain, mainly after 7pm. Cloudy, with a temperature rising to around 43 by 5am. South wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F⇑

    Chance Rain

  • Monday

    Monday: Rain, mainly before 1pm. High near 57. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 26 °F

    Partly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 34. Breezy.

    High: 34 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 22. Calm wind.
Sunday
A slight chance of rain after 3pm. Mostly cloudy, with a high near 39. Calm wind becoming southwest around 5 mph. Chance of precipitation is 20%.
Sunday Night
A chance of rain, mainly after 7pm. Cloudy, with a temperature rising to around 43 by 5am. South wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain, mainly before 1pm. High near 57. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Partly cloudy, with a low around 26. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Partly sunny, with a high near 34. Breezy.
Tuesday Night
Mostly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 26.
New Year's Day
A chance of snow. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Sunny, with a high near 32.
Friday Night
Partly cloudy, with a low around 19.
Saturday
Mostly sunny, with a high near 36.
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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:
4:11 pm EST Dec 27, 2025
Forecast Valid:
1am EST Dec 28, 2025-6pm EST Jan 3, 2026
 
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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