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

43°F

6°C

Humidity 43%
Wind Speed S 12 mph
Barometer 29.84 in (1010.2 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 13 Jan 5:53 pm EST
Extended Forecast for

3 Miles W Hopewell NJ

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. Southwest wind 5 to 10 mph.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of rain before 3pm, then a slight chance of rain after 4pm. Mostly cloudy, with a high near 49. Southwest wind around 5 mph. Chance of precipitation is 20%.

    High: 49 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 1am, then rain and snow. Low around 26. South wind 5 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Rain Likely
    then
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 30. West wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 30 °F

    Chance
    Rain/Snow
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 15. West wind 10 to 15 mph.

    Low: 15 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 36. Southwest wind 5 to 10 mph.
Wednesday
A slight chance of rain before 3pm, then a slight chance of rain after 4pm. Mostly cloudy, with a high near 49. Southwest wind around 5 mph. Chance of precipitation is 20%.
Wednesday Night
Rain likely before 1am, then rain and snow. Low around 26. South wind 5 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Thursday
A chance of rain and snow before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 30. West wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Thursday Night
Partly cloudy, with a low around 15. West wind 10 to 15 mph.
Friday
Mostly sunny, with a high near 31.
Friday Night
Mostly cloudy, with a low around 25.
Saturday
Mostly cloudy, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Partly sunny, with a high near 31.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Partly sunny, with a high near 29.
Monday Night
Mostly cloudy, with a low around 16.
Tuesday
Partly sunny, with a high near 25.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Hopewell NJ
 40.39°N 74.84°W (Elev. 299 ft)
Last Update:
4:12 pm EST Jan 13, 2026
Forecast Valid:
6pm EST Jan 13, 2026-6pm EST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation