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.

Partly Cloudy

46°F

8°C

Humidity 47%
Wind Speed SW 8 mph
Barometer 29.69 in (1004.8 mb)
Dewpoint 27°F (-3°C)
Visibility NA
Wind Chill42°F (6°C)
Last update 14 Jan 1:53 am EST
Extended Forecast for

Newtown PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 38. Southwest wind 5 to 10 mph.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of rain before 11am, then a slight chance of rain after 4pm. Cloudy, with a high near 52. Southwest wind around 5 mph. Chance of precipitation is 20%.

    High: 52 °F

    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 3am, then rain likely, possibly mixed with snow. Cloudy, with a low around 29. Light and variable wind becoming west 5 to 10 mph after midnight. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance Rain
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: A slight chance of snow before 7am, then a slight chance of snow showers between 7am and 1pm. Partly sunny, with a high near 36. Breezy, with a west wind 15 to 20 mph. Chance of precipitation is 20%.

    High: 36 °F

    Slight Chance
    Snow and
    Breezy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 19. West wind around 15 mph, with gusts as high as 30 mph.

    Low: 19 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow before 1pm, then a chance of rain and snow. Partly sunny, with a high near 42. Chance of precipitation is 40%.

    High: 42 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 38. Southwest wind 5 to 10 mph.
Wednesday
A slight chance of rain before 11am, then a slight chance of rain after 4pm. Cloudy, with a high near 52. Southwest wind around 5 mph. Chance of precipitation is 20%.
Wednesday Night
Rain likely before 3am, then rain likely, possibly mixed with snow. Cloudy, with a low around 29. Light and variable wind becoming west 5 to 10 mph after midnight. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
A slight chance of snow before 7am, then a slight chance of snow showers between 7am and 1pm. Partly sunny, with a high near 36. Breezy, with a west wind 15 to 20 mph. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 19. West wind around 15 mph, with gusts as high as 30 mph.
Friday
Mostly sunny, with a high near 33.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
A chance of snow before 1pm, then a chance of rain and snow. Partly sunny, with a high near 42. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a low around 23.
Sunday
Partly sunny, with a high near 31.
Sunday Night
Mostly clear, with a low around 18.
M.L.King Day
Mostly sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newtown PA
 40.22°N 74.93°W (Elev. 164 ft)
Last Update:
1:25 am EST Jan 14, 2026
Forecast Valid:
2am EST Jan 14, 2026-6pm EST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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