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

45°F

7°C

Humidity 68%
Wind Speed Calm
Barometer 30.01 in (1015.7 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 7 Jan 10:53 pm EST
Extended Forecast for

Fairless Hills PA

  • Tonight

    Tonight: Mostly clear, with a low around 33. West wind around 5 mph.

    Low: 33 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 49. Calm wind.

    High: 49 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 33. Calm wind.

    Low: 33 °F

    Increasing
    Clouds

  • Friday

    Friday: A chance of rain after 1pm. Mostly cloudy, with a high near 56. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 40%.

    High: 56 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain likely, mainly after 1am. Cloudy, with a low around 50. Southwest wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Rain Likely

  • Saturday

    Saturday: Rain. High near 61. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 61 °F

    Rain

  • Saturday Night

    Saturday Night: Rain, mainly before 1am. Low around 43. Chance of precipitation is 80%.

    Low: 43 °F

    Rain

  • Sunday

    Sunday: A chance of rain before 1pm. Mostly cloudy, with a high near 52. Chance of precipitation is 30%.

    High: 52 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 33. West wind around 5 mph.
Thursday
Sunny, with a high near 49. Calm wind.
Thursday Night
Increasing clouds, with a low around 33. Calm wind.
Friday
A chance of rain after 1pm. Mostly cloudy, with a high near 56. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 40%.
Friday Night
Rain likely, mainly after 1am. Cloudy, with a low around 50. Southwest wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain. High near 61. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Rain, mainly before 1am. Low around 43. Chance of precipitation is 80%.
Sunday
A chance of rain before 1pm. Mostly cloudy, with a high near 52. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 29.
Monday
Sunny, with a high near 40.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 45.
Tuesday Night
Partly cloudy, with a low around 30.
Wednesday
Mostly cloudy, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fairless Hills PA
 40.19°N 74.82°W (Elev. 92 ft)
Last Update:
4:12 pm EST Jan 7, 2026
Forecast Valid:
11pm EST Jan 7, 2026-6pm EST Jan 14, 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