National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

40°F

4°C

Humidity 97%
Wind Speed Calm
Barometer 30.09 in (1018.4 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 19 Apr 9:53 pm EDT
Extended Forecast for

Tullytown PA

Freeze Watch April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Tonight

    Tonight: Increasing clouds, with a low around 39. Northwest wind around 5 mph becoming calm in the evening.

    Low: 39 °F

    Increasing
    Clouds

  • Monday

    Monday: A slight chance of showers between 1pm and 2pm. Mostly cloudy, with a high near 54. Northwest wind 5 to 15 mph. Chance of precipitation is 20%.

    High: 54 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming clear, with a low around 32. North wind around 5 mph.

    Low: 32 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 57. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 57 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 44. South wind around 5 mph. Chance of precipitation is 30%.

    Low: 44 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 2pm. Partly sunny, with a high near 67. Chance of precipitation is 30%.

    High: 67 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 39. Northwest wind around 5 mph becoming calm in the evening.
Monday
A slight chance of showers between 1pm and 2pm. Mostly cloudy, with a high near 54. Northwest wind 5 to 15 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, then gradually becoming clear, with a low around 32. North wind around 5 mph.
Tuesday
Sunny, with a high near 57. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 44. South wind around 5 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers before 2pm. Partly sunny, with a high near 67. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 50.
Friday
Mostly sunny, with a high near 73.
Friday Night
A chance of showers. Partly cloudy, with a low around 49. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 66. Chance of precipitation is 50%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.
Sunday
A chance of showers. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.
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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:
4:11 pm EDT Apr 19, 2026
Forecast Valid:
10pm EDT Apr 19, 2026-6pm EDT Apr 26, 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