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

34°F

1°C

Humidity 44%
Wind Speed W 17 G 29 mph
Barometer 29.52 in (999.0 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 15 Jan 10:53 am EST
Extended Forecast for

Newtown PA

  • Today

    Today: Partly sunny, with a high near 38. Breezy, with a west wind 20 to 25 mph.

    High: 38 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 21. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 21 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Friday

    Friday: Sunny, with a high near 35. West wind 10 to 15 mph.

    High: 35 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of snow after 1am. Increasing clouds, with a low around 27. South wind around 5 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A chance of snow before 1pm, then a chance of rain and snow between 1pm and 4pm, then a 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 Snow
    then Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A slight chance of rain before 4am, then a slight chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow

  • Sunday

    Sunday: A chance of snow after 7am. Mostly cloudy, with a high near 33. Chance of precipitation is 30%.

    High: 33 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 30.

    High: 30 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 38. Breezy, with a west wind 20 to 25 mph.
Tonight
Mostly cloudy, with a low around 21. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Friday
Sunny, with a high near 35. West wind 10 to 15 mph.
Friday Night
A slight chance of snow after 1am. Increasing clouds, with a low around 27. South wind around 5 mph. Chance of precipitation is 20%.
Saturday
A chance of snow before 1pm, then a chance of rain and snow between 1pm and 4pm, then a 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
A slight chance of rain before 4am, then a slight chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 20%.
Sunday
A chance of snow after 7am. Mostly cloudy, with a high near 33. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 18.
M.L.King Day
Sunny, with a high near 30.
Monday Night
Partly cloudy, with a low around 14.
Tuesday
Sunny, with a high near 23.
Tuesday Night
Mostly clear, with a low around 10.
Wednesday
Mostly sunny, with a high near 28.
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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:
4:14 am EST Jan 15, 2026
Forecast Valid:
11am EST Jan 15, 2026-6pm EST Jan 21, 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