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

33°F

1°C

Humidity 52%
Wind Speed W 13 G 25 mph
Barometer 29.71 in (1005.4 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 17 Mar 5:53 am EDT
Extended Forecast for

Newtown PA

  • Today

    Today: Partly sunny, with a high near 40. Breezy, with a west wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 40 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 25. West wind 10 to 15 mph.

    Low: 25 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40. Northwest wind around 5 mph becoming calm.

    High: 40 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 51. Calm wind becoming south around 5 mph in the afternoon.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of rain after 2am. Mostly cloudy, with a low around 35. Chance of precipitation is 20%.

    Low: 35 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Friday

    Friday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 40%.

    Low: 40 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 40. Breezy, with a west wind 20 to 25 mph, with gusts as high as 35 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 25. West wind 10 to 15 mph.
Wednesday
Mostly sunny, with a high near 40. Northwest wind around 5 mph becoming calm.
Wednesday Night
Partly cloudy, with a low around 28. Calm wind.
Thursday
Mostly sunny, with a high near 51. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
A slight chance of rain after 2am. Mostly cloudy, with a low around 35. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 56.
Friday Night
A chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 56.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 39. Chance of precipitation is 30%.
Sunday
Mostly cloudy, with a high near 58.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newtown PA
 40.22°N 74.93°W (Elev. 164 ft)
Last Update:
4:11 am EDT Mar 17, 2026
Forecast Valid:
6am EDT Mar 17, 2026-6pm EDT Mar 23, 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