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.

Fair

17°F

-8°C

Humidity 47%
Wind Speed W 14 G 23 mph
Barometer 30.04 in (1017.0 mb)
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Wind Chill3°F (-16°C)
Last update 26 Jan 11:53 pm EST
Extended Forecast for

Princeton NJSimilar City Names

Cold Weather Advisory until January 28, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory until January 28, 10:00am

    NOW until 10:00am Wed

    Cold Weather Advisory

  • Overnight

    Low: 6 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 20. Wind chill values as low as -7. West wind 10 to 15 mph.

    High: 20 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming clear, with a low around 4. Wind chill values as low as -7. West wind around 5 mph.

    Low: 4 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Increasing clouds, with a high near 21. Wind chill values as low as -7. West wind around 5 mph.

    High: 21 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 3. West wind around 5 mph.

    Low: 3 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 19.

    High: 19 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -1.

    Low: -1 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 17.

    High: 17 °F

    Mostly Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 6. Wind chill values as low as -3. West wind around 5 mph.
Tuesday
Increasing clouds, with a high near 20. Wind chill values as low as -7. West wind 10 to 15 mph.
Tuesday Night
Mostly cloudy, then gradually becoming clear, with a low around 4. Wind chill values as low as -7. West wind around 5 mph.
Wednesday
Increasing clouds, with a high near 21. Wind chill values as low as -7. West wind around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 3. West wind around 5 mph.
Thursday
Mostly sunny, with a high near 19.
Thursday Night
Partly cloudy, with a low around -1.
Friday
Mostly sunny, with a high near 17.
Friday Night
Partly cloudy, with a low around -1.
Saturday
Partly sunny, with a high near 20.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 8. Chance of precipitation is 30%.
Sunday
A chance of snow. Cloudy, with a high near 26. Chance of precipitation is 40%.
Sunday Night
Mostly cloudy, with a low around 14.
Monday
Partly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton NJSimilar City Names
 40.35°N 74.67°W (Elev. 190 ft)
Last Update:
11:14 pm EST Jan 26, 2026
Forecast Valid:
12am EST Jan 27, 2026-6pm EST Feb 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation