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.

Fog/Mist

38°F

3°C

Humidity 97%
Wind Speed SW 3 mph
Barometer 30.21 in (1022.6 mb)
Dewpoint 37°F (3°C)
Visibility 4.00 mi
Last update 4 Mar 1:53 am EST
Extended Forecast for

Tullytown PA

  • Overnight

    Overnight: A chance of rain, mainly before 4am. Patchy fog. Otherwise, cloudy, with a low around 38. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Chance Rain
    and Patchy
    Fog

  • Wednesday

    Wednesday: A chance of rain, mainly between 1pm and 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 50. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Chance Rain
    and Patchy
    Fog

  • Wednesday Night

    Wednesday Night: Rain, mainly after 4am. Patchy fog after 11pm. Low around 40. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Rain and
    Patchy Fog

  • Thursday

    Thursday: Showers. Patchy fog before noon. High near 49. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: Showers. Patchy fog after 1am. Low around 41. East wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Showers and
    Patchy Fog

  • Friday

    Friday: A slight chance of showers before 1pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 48. Chance of precipitation is 20%.

    High: 48 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers after 1pm. Mostly cloudy, with a high near 67. Chance of precipitation is 30%.

    High: 67 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.

    Low: 51 °F

    Showers
    Likely

Detailed Forecast

Overnight
A chance of rain, mainly before 4am. Patchy fog. Otherwise, cloudy, with a low around 38. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of rain, mainly between 1pm and 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 50. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain, mainly after 4am. Patchy fog after 11pm. Low around 40. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers. Patchy fog before noon. High near 49. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Showers. Patchy fog after 1am. Low around 41. East wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A slight chance of showers before 1pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 48. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 42.
Saturday
A chance of showers after 1pm. Mostly cloudy, with a high near 67. Chance of precipitation is 30%.
Saturday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tullytown PA
 40.12°N 74.83°W (Elev. 13 ft)
Last Update:
1:59 am EST Mar 4, 2026
Forecast Valid:
2am EST Mar 4, 2026-6pm EDT Mar 10, 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