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.

Mostly Cloudy

62°F

17°C

Humidity 86%
Wind Speed W 5 mph
Barometer 29.67 in (1004.2 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 27 Mar 3:53 am EDT
Extended Forecast for

Newtown PA

  • Overnight

    Overnight: Rain. Low around 52. West wind around 10 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Rain

  • Friday

    Friday: Rain before noon, then a slight chance of rain after 2pm. Temperature falling to around 49 by 2pm. North wind 10 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F⇓

    Rain then
    Slight Chance
    Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 29. North wind around 5 mph.

    Low: 29 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 43. Northwest wind 10 to 15 mph.

    High: 43 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 27. Northwest wind around 5 mph becoming calm in the evening.

    Low: 27 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 48. Chance of precipitation is 30%.

    Low: 48 °F

    Chance
    Showers

Detailed Forecast

Overnight
Rain. Low around 52. West wind around 10 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain before noon, then a slight chance of rain after 2pm. Temperature falling to around 49 by 2pm. North wind 10 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Mostly cloudy, with a low around 29. North wind around 5 mph.
Saturday
Sunny, with a high near 43. Northwest wind 10 to 15 mph.
Saturday Night
Mostly clear, with a low around 27. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Partly sunny, with a high near 63.
Monday Night
A chance of showers. Mostly cloudy, with a low around 48. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 69. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 75. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newtown PA
 40.22°N 74.96°W (Elev. 98 ft)
Last Update:
4:10 am EDT Mar 27, 2026
Forecast Valid:
4am EDT Mar 27, 2026-6pm EDT Apr 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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