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

39°F

4°C

Humidity 100%
Wind Speed Vrbl 3 mph
Barometer 30.22 in (1022.9 mb)
Dewpoint 39°F (4°C)
Visibility 3.00 mi
Last update 7 Mar 9:53 am EST
Extended Forecast for

Newtown PA

  • Today

    Today: Cloudy, with a high near 48. Calm wind becoming south around 5 mph in the afternoon.

    High: 48 °F

    Cloudy

  • Tonight

    Tonight: Showers likely, mainly before 4am. Mostly cloudy, with a temperature rising to around 57 by 4am. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F⇑

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers before 1pm. Mostly cloudy, with a high near 68. West wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. West wind around 5 mph.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 69. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.

    Low: 53 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers. Cloudy, with a high near 76. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    Showers

Detailed Forecast

Today
Cloudy, with a high near 48. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Showers likely, mainly before 4am. Mostly cloudy, with a temperature rising to around 57 by 4am. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of showers before 1pm. Mostly cloudy, with a high near 68. West wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Partly cloudy, with a low around 40. West wind around 5 mph.
Monday
Sunny, with a high near 69. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 47.
Tuesday
Sunny, with a high near 75.
Tuesday Night
A chance of showers after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Wednesday
A chance of showers. Cloudy, with a high near 76. Chance of precipitation is 40%.
Wednesday Night
Showers likely. Cloudy, with a low around 50. Breezy. Chance of precipitation is 70%.
Thursday
A chance of showers. Cloudy, with a high near 61. Breezy. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Mostly cloudy, with a high near 48.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newtown PA
 40.22°N 74.96°W (Elev. 98 ft)
Last Update:
4:09 am EST Mar 7, 2026
Forecast Valid:
10am EST Mar 7, 2026-6pm EDT Mar 13, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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