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

52°F

11°C

Humidity 97%
Wind Speed Calm
Barometer 30.14 in (1019.9 mb)
Dewpoint 51°F (11°C)
Visibility 1.25 mi
Last update 4 Apr 6:53 am EDT
Extended Forecast for

Newtown PA

  • Today

    Today: A chance of showers and thunderstorms, mainly between 2pm and 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 75. Northwest wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 30%.

    High: 75 °F

    Patchy Fog
    then Chance
    Showers

  • Tonight

    Tonight: A chance of showers before 2am, then a chance of showers after 4am. Patchy fog before 2am, then patchy fog after 3am. Otherwise, mostly cloudy, with a low around 50. East wind 5 to 15 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers, mainly before 5pm. High near 66. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 66 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 40. Northwest wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 57. West wind 10 to 15 mph.

    High: 57 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of showers. Partly cloudy, with a low around 40. Chance of precipitation is 20%.

    Low: 40 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 28.

    Low: 28 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly between 2pm and 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 75. Northwest wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 30%.
Tonight
A chance of showers before 2am, then a chance of showers after 4am. Patchy fog before 2am, then patchy fog after 3am. Otherwise, mostly cloudy, with a low around 50. East wind 5 to 15 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers, mainly before 5pm. High near 66. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 40. Northwest wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 57. West wind 10 to 15 mph.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 40. Chance of precipitation is 20%.
Tuesday
Sunny, with a high near 52.
Tuesday Night
Clear, with a low around 28.
Wednesday
Sunny, with a high near 54.
Wednesday Night
Mostly clear, with a low around 34.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newtown PA
 40.22°N 74.96°W (Elev. 98 ft)
Last Update:
4:10 am EDT Apr 4, 2026
Forecast Valid:
7am EDT Apr 4, 2026-6pm EDT Apr 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