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

50°F

10°C

Humidity 68%
Wind Speed SE 3 mph
Barometer 29.78 in (1007.8 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 11 Nov 10:53 pm EST
Extended Forecast for

Hopewell NJ

  • Tonight

    Tonight: A chance of showers, mainly before 3am. Cloudy, with a low around 48. Southeast wind around 5 mph becoming northeast after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then showers likely after 4pm. High near 58. East wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 58 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely before 7pm, then rain likely after 7pm. Mostly cloudy, with a low around 38. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Showers
    Likely

  • Friday

    Friday: Rain. High near 44. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 44 °F

    Rain

  • Friday Night

    Friday Night: A slight chance of rain before 1am. Mostly cloudy, with a low around 32. Northwest wind around 5 mph. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers, mainly before 3am. Cloudy, with a low around 48. Southeast wind around 5 mph becoming northeast after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then showers likely after 4pm. High near 58. East wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers likely before 7pm, then rain likely after 7pm. Mostly cloudy, with a low around 38. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain. High near 44. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A slight chance of rain before 1am. Mostly cloudy, with a low around 32. Northwest wind around 5 mph. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 47.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 49.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Mostly sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 29.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Partly cloudy, with a low around 29.
Wednesday
Sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hopewell NJ
 40.4°N 74.78°W (Elev. 341 ft)
Last Update:
5:58 pm EST Nov 11, 2026
Forecast Valid:
11pm EST Nov 11, 2026-6pm EST Nov 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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