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

59°F

15°C

Humidity 39%
Wind Speed S 3 mph
Barometer 30.09 in (1018.4 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 12 May 8:53 pm EDT
Extended Forecast for

Fairless Hills PA

  • Tonight

    Tonight: Increasing clouds, with a low around 51. South wind around 5 mph.

    Low: 51 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 75. South wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 75 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 55. South wind 5 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Showers
    Likely then
    Showers

  • Thursday

    Thursday: Showers likely, mainly before 7am. Partly sunny, with a high near 68. West wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50. Northwest wind 5 to 10 mph.

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 51. South wind around 5 mph.
Wednesday
Partly sunny, with a high near 75. South wind 10 to 15 mph, with gusts as high as 30 mph.
Wednesday Night
Showers and possibly a thunderstorm. Low around 55. South wind 5 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely, mainly before 7am. Partly sunny, with a high near 68. West wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, with a low around 50. Northwest wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
Sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
A chance of showers. Mostly sunny, with a high near 94. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fairless Hills PA
 40.17°N 74.85°W (Elev. 98 ft)
Last Update:
4:08 pm EDT May 12, 2026
Forecast Valid:
9pm EDT May 12, 2026-6pm EDT May 19, 2026
 
Forecast Discussion
 
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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