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

29°F

-2°C

Humidity 78%
Wind Speed Calm
Barometer 30.06 in (1017.5 mb)
Dewpoint 23°F (-5°C)
Visibility 8.00 mi
Last update 15 Feb 12:53 am EST
Extended Forecast for

2 Miles ENE Hopewell NJ

  • Overnight

    Overnight: Patchy freezing fog after 3am. Mostly cloudy, with a low around 24. Calm wind.

    Low: 24 °F

    Patchy
    Freezing Fog

  • Sunday

    Sunday: A slight chance of rain and snow after 4pm. Patchy freezing fog before 9am. Mostly cloudy, with a high near 41. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 41 °F

    Patchy
    Freezing Fog
    then Slight
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before 1am. Cloudy, with a low around 28. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 28 °F

    Snow Likely

  • Washington's Birthday

    Washington's Birthday: Mostly cloudy, with a high near 40. Northeast wind 5 to 10 mph becoming light in the afternoon.

    High: 40 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain. Mostly cloudy, with a high near 44. Chance of precipitation is 40%.

    High: 44 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 40%.

    Low: 37 °F

    Chance Rain

Detailed Forecast

Overnight
Patchy freezing fog after 3am. Mostly cloudy, with a low around 24. Calm wind.
Sunday
A slight chance of rain and snow after 4pm. Patchy freezing fog before 9am. Mostly cloudy, with a high near 41. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
Snow likely, mainly before 1am. Cloudy, with a low around 28. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Washington's Birthday
Mostly cloudy, with a high near 40. Northeast wind 5 to 10 mph becoming light in the afternoon.
Monday Night
Mostly cloudy, with a low around 28. Calm wind.
Tuesday
Partly sunny, with a high near 46.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
A chance of rain. Mostly cloudy, with a high near 44. Chance of precipitation is 40%.
Wednesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 40%.
Thursday
A chance of rain. Partly sunny, with a high near 51. Chance of precipitation is 30%.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.
Friday
A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 50%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 40%.
Saturday
A chance of rain and snow. Partly sunny, with a high near 46. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Hopewell NJ
 40.4°N 74.75°W (Elev. 233 ft)
Last Update:
4:17 pm EST Feb 14, 2026
Forecast Valid:
1am EST Feb 15, 2026-6pm EST Feb 21, 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