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.

Overcast

41°F

5°C

Humidity 47%
Wind Speed E 12 mph
Barometer 30.44 in (1030.4 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 15 Mar 10:53 am EDT
Extended Forecast for

Newtown PA

  • Today

    Today: Partly sunny, with a high near 54. Southeast wind 10 to 15 mph.

    High: 54 °F

    Partly Sunny

  • Tonight

    Tonight: Rain and possibly a thunderstorm before 5am, then a chance of rain. Low around 45. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 45 °F

    Slight Chance
    Rain then
    Rain

  • Monday

    Monday: A slight chance of rain, then showers and possibly a thunderstorm after 8am. Some of the storms could be severe. High near 66. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 66 °F

    Severe
    Thunderstorms
    and Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 32. Breezy, with a south wind around 20 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 32 °F

    Breezy.
    Severe
    Thunderstorms
    then Showers

  • Tuesday

    Tuesday: A chance of showers before 8am. Mostly sunny, with a high near 40. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 40 °F

    Chance
    Showers and
    Breezy then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 54. Southeast wind 10 to 15 mph.
Tonight
Rain and possibly a thunderstorm before 5am, then a chance of rain. Low around 45. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A slight chance of rain, then showers and possibly a thunderstorm after 8am. Some of the storms could be severe. High near 66. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 32. Breezy, with a south wind around 20 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
A chance of showers before 8am. Mostly sunny, with a high near 40. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Mostly clear, with a low around 24.
Wednesday
Mostly sunny, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
Partly sunny, with a high near 51.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 55.
Friday Night
A chance of rain. Mostly cloudy, with a low around 38. Chance of precipitation is 50%.
Saturday
A chance of rain. Partly sunny, with a high near 53. Chance of precipitation is 30%.
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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:
4:11 am EDT Mar 15, 2026
Forecast Valid:
11am EDT Mar 15, 2026-6pm EDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation