National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Overcast

78°F

26°C

Humidity 39%
Wind Speed NW 7 mph
Barometer 29.84 in (1009.8 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Apr 3:53 pm EDT
Extended Forecast for

Newtown PA

Coastal Flood Advisory April 19, 01:00am until April 19, 06:00am
Click here for hazard details and duration
Coastal Flood Advisory

  • This Afternoon

    This Afternoon: A slight chance of showers before 5pm. Mostly sunny, with a high near 80. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 80 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. North wind around 5 mph becoming east after midnight.

    Low: 55 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 68. Southeast wind 5 to 10 mph.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Increasing clouds, with a low around 48. Southeast wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers, mainly after 8am. High near 59. Northwest wind 5 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 59 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely before 8pm. Partly cloudy, with a low around 37. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Showers
    Likely then
    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of showers before 5pm. Mostly sunny, with a high near 80. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 55. North wind around 5 mph becoming east after midnight.
Saturday
Mostly sunny, with a high near 68. Southeast wind 5 to 10 mph.
Saturday Night
A chance of showers after 2am. Increasing clouds, with a low around 48. Southeast wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers, mainly after 8am. High near 59. Northwest wind 5 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers likely before 8pm. Partly cloudy, with a low around 37. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 31.
Tuesday
Sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 48.
Friday
Mostly sunny, with a high near 75.
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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:
4:10 pm EDT Apr 17, 2026
Forecast Valid:
4pm EDT Apr 17, 2026-6pm EDT Apr 24, 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