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.

Mostly Cloudy

27°F

-3°C

Humidity 61%
Wind Speed NW 6 mph
Barometer 29.88 in (1011.6 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 24 Feb 4:53 am EST
Extended Forecast for

Hopewell NJ

  • Today

    Today: Mostly sunny, with a high near 31. Northwest wind 10 to 15 mph.

    High: 31 °F

    Mostly Sunny

  • Tonight

    Tonight: Snow likely, mainly after 4am. Increasing clouds, with a low around 17. South wind around 5 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 17 °F

    Partly Cloudy
    then Snow
    Likely

  • Wednesday

    Wednesday: A chance of rain and snow, mainly between 7am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 45. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 45 °F

    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28. West wind around 5 mph.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of snow before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 41. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of rain and snow before 10pm, then a chance of rain between 10pm and 4am, then a slight chance of freezing rain after 4am. Mostly cloudy, with a low around 24. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 24 °F

    Chance Wintry
    Mix

  • Friday

    Friday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 31. Northwest wind 10 to 15 mph.
Tonight
Snow likely, mainly after 4am. Increasing clouds, with a low around 17. South wind around 5 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Wednesday
A chance of rain and snow, mainly between 7am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 45. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 28. West wind around 5 mph.
Thursday
A chance of snow before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 41. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday Night
A chance of rain and snow before 10pm, then a chance of rain between 10pm and 4am, then a slight chance of freezing rain after 4am. Mostly cloudy, with a low around 24. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Mostly sunny, with a high near 41.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Mostly sunny, with a high near 42.
Sunday Night
Partly cloudy, with a low around 18.
Monday
A chance of snow. Partly sunny, with a high near 31. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hopewell NJ
 40.38°N 74.75°W (Elev. 200 ft)
Last Update:
4:15 am EST Feb 24, 2026
Forecast Valid:
5am EST Feb 24, 2026-6pm EST Mar 2, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation