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.

Fog/Mist

35°F

2°C

Humidity 93%
Wind Speed SW 7 mph
Barometer 30.14 in (1020.4 mb)
Dewpoint 33°F (1°C)
Visibility 5.00 mi
Wind Chill29°F (-2°C)
Last update 17 Feb 10:53 am EST
Extended Forecast for

Newtown PA

  • Today

    Today: Mostly cloudy, with a high near 46. Southwest wind around 5 mph.

    High: 46 °F

    Mostly Cloudy

  • Tonight

    Tonight: Increasing clouds, with a low around 34. Calm wind.

    Low: 34 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Rain likely, mainly after 1pm. Cloudy, with a high near 47. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A chance of rain before 1am. Mostly cloudy, with a low around 37. West wind around 5 mph becoming northwest after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain after 1pm. Mostly cloudy, with a high near 46. North wind around 5 mph becoming east in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A chance of rain and snow before 4am, then a chance of rain. Cloudy, with a low around 35. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 35 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Rain. High near 45. Chance of precipitation is 90%.

    High: 45 °F

    Rain

  • Friday Night

    Friday Night: A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.

    Low: 35 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain before 1pm. Partly sunny, with a high near 47. Chance of precipitation is 30%.

    High: 47 °F

    Chance Rain

Detailed Forecast

Today
Mostly cloudy, with a high near 46. Southwest wind around 5 mph.
Tonight
Increasing clouds, with a low around 34. Calm wind.
Wednesday
Rain likely, mainly after 1pm. Cloudy, with a high near 47. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 37. West wind around 5 mph becoming northwest after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of rain after 1pm. Mostly cloudy, with a high near 46. North wind around 5 mph becoming east in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of rain and snow before 4am, then a chance of rain. Cloudy, with a low around 35. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain. High near 45. Chance of precipitation is 90%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.
Saturday
A chance of rain before 1pm. Partly sunny, with a high near 47. Chance of precipitation is 30%.
Saturday Night
A chance of rain and snow after 1am. Partly cloudy, with a low around 31. Chance of precipitation is 30%.
Sunday
A chance of rain and snow. Partly sunny, with a high near 40. Chance of precipitation is 50%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 40%.
Monday
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:
4:13 am EST Feb 17, 2026
Forecast Valid:
11am EST Feb 17, 2026-6pm EST Feb 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