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.

Fair

32°F

0°C

Humidity 82%
Wind Speed Calm
Barometer 30.12 in (1019.5 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 20 Mar 6:53 am EDT
Extended Forecast for

Newtown PA

  • Today

    Today: Mostly sunny, with a high near 65. Light south wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 30 mph.

    High: 65 °F

    Mostly Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then a slight chance of showers between 2am and 3am. Cloudy, then gradually becoming partly cloudy, with a low around 47. Southwest wind 5 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 59. Northwest wind 5 to 10 mph.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41. Calm wind becoming south around 5 mph.

    Low: 41 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 68. Southwest wind 5 to 15 mph.

    High: 68 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 47. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely, mainly before 8am. Partly sunny, with a high near 57. Chance of precipitation is 60%.

    High: 57 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 65. Light south wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 30 mph.
Tonight
Showers and thunderstorms likely before 2am, then a slight chance of showers between 2am and 3am. Cloudy, then gradually becoming partly cloudy, with a low around 47. Southwest wind 5 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 59. Northwest wind 5 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 41. Calm wind becoming south around 5 mph.
Sunday
Partly sunny, with a high near 68. Southwest wind 5 to 15 mph.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 47. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers likely, mainly before 8am. Partly sunny, with a high near 57. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Partly sunny, with a high near 53.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 30%.
Thursday
A chance of rain. Partly sunny, with a high near 57. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Newtown PA
 40.22°N 74.96°W (Elev. 98 ft)
Last Update:
4:09 am EDT Mar 20, 2026
Forecast Valid:
7am EDT Mar 20, 2026-6pm EDT Mar 26, 2026
 
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Additional Resources

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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