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

27°F

-3°C

Humidity 78%
Wind Speed NW 5 mph
Barometer 30.37 in (1028.0 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 21 Apr 5:53 am EDT
Extended Forecast for

Tullytown PA

Freeze Warning April 21, 06:35am until April 21, 09:00am
Click here for hazard details and duration
...
  •  
    Freeze Warning April 21, 06:35am until April 21, 09:00am

    NOW until 9:00am Tue

    Freeze Warning

  • Today

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Showers likely, mainly after 4am. Increasing clouds, with a low around 44. South wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, mainly before 2pm. Mostly cloudy, with a high near 64. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46. Northeast wind around 5 mph.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 74. Northwest wind 5 to 10 mph.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.

    Low: 46 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 57. North wind around 5 mph becoming southwest in the afternoon.
Tonight
Showers likely, mainly after 4am. Increasing clouds, with a low around 44. South wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of showers, mainly before 2pm. Mostly cloudy, with a high near 64. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 46. Northeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 74. Northwest wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 50.
Friday
Partly sunny, with a high near 68.
Friday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Saturday
Showers likely. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.
Saturday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 70%.
Sunday
A chance of showers. Mostly cloudy, with a high near 59. Chance of precipitation is 40%.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 65.
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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:
4:10 am EDT Apr 21, 2026
Forecast Valid:
6am EDT Apr 21, 2026-6pm EDT Apr 27, 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