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.

Overcast

25°F

-4°C

Humidity 63%
Wind Speed SW 5 mph
Barometer 30.13 in (1019.8 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 14 Feb 3:53 am EST
Extended Forecast for

Tullytown PA

  • Overnight

    Overnight: A slight chance of snow showers. Mostly cloudy, with a low around 22. Calm wind. Chance of precipitation is 20%.

    Low: 22 °F

    Slight Chance
    Snow Showers

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 43. Southwest wind around 5 mph.

    High: 43 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 25. Calm wind.

    Low: 25 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of rain between 1pm and 4pm, then a chance of snow after 4pm. Mostly cloudy, with a high near 42. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 42 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A chance of snow, mainly before 1am. Mostly cloudy, with a low around 30. East wind around 5 mph becoming calm. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Chance Snow

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A slight chance of snow showers. Mostly cloudy, with a low around 22. Calm wind. Chance of precipitation is 20%.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 43. Southwest wind around 5 mph.
Saturday Night
Increasing clouds, with a low around 25. Calm wind.
Sunday
A chance of rain between 1pm and 4pm, then a chance of snow after 4pm. Mostly cloudy, with a high near 42. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday Night
A chance of snow, mainly before 1am. Mostly cloudy, with a low around 30. East wind around 5 mph becoming calm. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Washington's Birthday
Partly sunny, with a high near 43.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Mostly sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
A chance of rain. Cloudy, with a high near 48. Chance of precipitation is 50%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 38. Chance of precipitation is 50%.
Thursday
A chance of rain. Mostly cloudy, with a high near 53. Chance of precipitation is 30%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 44. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tullytown PA
 40.14°N 74.83°W (Elev. 39 ft)
Last Update:
4:15 am EST Feb 14, 2026
Forecast Valid:
4am EST Feb 14, 2026-6pm EST Feb 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation