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 43%
Wind Speed W 8 G 20 mph
Barometer 29.57 in (1000.8 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 15 Jan 5:53 pm EST
Extended Forecast for

Newtown PA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 21. West wind around 15 mph, with gusts as high as 30 mph.

    Low: 21 °F

    Decreasing
    Clouds

  • Friday

    Friday: Increasing clouds, with a high near 35. West wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 35 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A chance of snow after 1am. Increasing clouds, with a low around 26. South wind around 5 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Partly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: A chance of snow before 10am, then a chance of rain and snow between 10am and 4pm, then a slight chance of rain after 4pm. Mostly cloudy, with a high near 42. South wind around 5 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 28. Southwest wind around 5 mph.

    Low: 28 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 20%.

    High: 33 °F

    Slight Chance
    Snow

  • Sunday Night

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

    Low: 19 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 33.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 12.

    Low: 12 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 21. West wind around 15 mph, with gusts as high as 30 mph.
Friday
Increasing clouds, with a high near 35. West wind 10 to 15 mph, with gusts as high as 30 mph.
Friday Night
A chance of snow after 1am. Increasing clouds, with a low around 26. South wind around 5 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Saturday
A chance of snow before 10am, then a chance of rain and snow between 10am and 4pm, then a slight chance of rain after 4pm. Mostly cloudy, with a high near 42. South wind around 5 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around 28. Southwest wind around 5 mph.
Sunday
A slight chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 19.
M.L.King Day
Sunny, with a high near 33.
Monday Night
Mostly clear, with a low around 12.
Tuesday
Sunny, with a high near 21.
Tuesday Night
Mostly clear, with a low around 10.
Wednesday
Mostly sunny, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Mostly sunny, with a high near 36.
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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:
5:51 pm EST Jan 15, 2026
Forecast Valid:
6pm EST Jan 15, 2026-6pm EST Jan 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation