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

27°F

-3°C

Humidity 49%
Wind Speed W 9 G 18 mph
Barometer 29.82 in (1009.3 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 30 Dec 8:53 pm EST
Extended Forecast for

Newtown PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. West wind 10 to 15 mph.

    Low: 23 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 35. Southwest wind 10 to 15 mph.

    High: 35 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: A chance of snow showers. Mostly cloudy, with a low around 24. Southwest wind 10 to 15 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Chance Snow
    Showers

  • New Year's Day

    New Year's Day: Sunny, with a high near 31. Northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 31 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 16. West wind around 5 mph.

    Low: 16 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 34.

    High: 34 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 23. West wind 10 to 15 mph.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 35. Southwest wind 10 to 15 mph.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 24. Southwest wind 10 to 15 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
New Year's Day
Sunny, with a high near 31. Northwest wind around 15 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 16. West wind around 5 mph.
Friday
Mostly cloudy, with a high near 34.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Mostly sunny, with a high near 34.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
Sunny, with a high near 35.
Sunday Night
Partly cloudy, with a low around 22.
Monday
A chance of snow. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Monday Night
A chance of rain. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 38.
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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:
4:12 pm EST Dec 30, 2025
Forecast Valid:
9pm EST Dec 30, 2025-6pm EST Jan 6, 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