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

60°F

16°C

Humidity 72%
Wind Speed N 8 mph
Barometer 30.06 in (1017.3 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 15 Oct 2:53 am EDT
Extended Forecast for

Newtown PA

  • Overnight

    Overnight: Partly cloudy, with a low around 54. North wind around 10 mph.

    Low: 54 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65. North wind 5 to 10 mph becoming east in the afternoon.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers likely, mainly after 2am. Increasing clouds, with a low around 55. Southeast wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers likely, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 78 °F

    Showers
    Likely then
    Mostly Sunny

  • Friday Night

    Friday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 47. West wind 10 to 15 mph becoming northwest after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers before 8am. Mostly sunny, with a high near 53. Breezy. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Breezy.
    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Patchy frost. Otherwise, mostly clear, with a low around 36.

    Low: 36 °F

    Patchy Frost

  • Sunday

    Sunday: Patchy frost before 10am. Otherwise, sunny, with a high near 56.

    High: 56 °F

    Patchy Frost
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 54. North wind around 10 mph.
Thursday
Mostly sunny, with a high near 65. North wind 5 to 10 mph becoming east in the afternoon.
Thursday Night
Showers likely, mainly after 2am. Increasing clouds, with a low around 55. Southeast wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 47. West wind 10 to 15 mph becoming northwest after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers before 8am. Mostly sunny, with a high near 53. Breezy. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Patchy frost. Otherwise, mostly clear, with a low around 36.
Sunday
Patchy frost before 10am. Otherwise, sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Partly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
Sunny, with a high near 64.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newtown PA
 40.24°N 74.93°W (Elev. 282 ft)
Last Update:
2:27 am EDT Oct 15, 2026
Forecast Valid:
3am EDT Oct 15, 2026-6pm EDT Oct 21, 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