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.

Overcast

44°F

7°C

Humidity 85%
Wind Speed E 13 G 21 mph
Barometer 30.41 in (1029.2 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 2 Apr 3:53 pm EDT
Extended Forecast for

Newtown PA

  • This Afternoon

    This Afternoon: A slight chance of showers. Patchy fog. Otherwise, cloudy, with a high near 49. East wind around 15 mph. Chance of precipitation is 20%.

    High: 49 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Tonight

    Tonight: A chance of showers, mainly before midnight. Patchy fog. Otherwise, cloudy, with a low around 41. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: Widespread dense fog before noon. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 76. East wind 5 to 15 mph becoming southwest in the afternoon.

    High: 76 °F

    Dense Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: A slight chance of showers before 2am. Partly cloudy, with a low around 60. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 60 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers. High near 71. Chance of precipitation is 100%.

    High: 71 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely before 8pm. Partly cloudy, with a low around 40. Chance of precipitation is 60%.

    Low: 40 °F

    Showers
    Likely then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A slight chance of showers. Patchy fog. Otherwise, cloudy, with a high near 49. East wind around 15 mph. Chance of precipitation is 20%.
Tonight
A chance of showers, mainly before midnight. Patchy fog. Otherwise, cloudy, with a low around 41. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Widespread dense fog before noon. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 76. East wind 5 to 15 mph becoming southwest in the afternoon.
Friday Night
A slight chance of showers before 2am. Partly cloudy, with a low around 60. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Saturday
A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers. High near 71. Chance of precipitation is 100%.
Sunday Night
Showers likely before 8pm. Partly cloudy, with a low around 40. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 38.
Tuesday
A chance of showers. Mostly sunny, with a high near 53. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly clear, with a low around 30. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 53.
Wednesday Night
Mostly clear, with a low around 33.
Thursday
Sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newtown PA
 40.22°N 74.96°W (Elev. 98 ft)
Last Update:
4:11 pm EDT Apr 2, 2026
Forecast Valid:
4pm EDT Apr 2, 2026-6pm EDT Apr 9, 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