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

9°C

48°F

Humidity 68%
Wind Speed N 24 G 33 km/h
Barometer 1010.7 mb (29.86 in)
Dewpoint 3°C (38°F)
Visibility 16 km
Wind Chill6°C (42°F)
Last update 8 May 3:53 am EDT
Extended Forecast for

2 Miles ENE Hopewell NJ

  • Today

    Today: Increasing clouds, with a high near 19. West wind 10 to 15 km/h increasing to 15 to 20 km/h in the afternoon. Winds could gust as high as 40 km/h.

    High: 19 °C

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 8. Calm wind.

    Low: 8 °C

    Mostly Cloudy

  • Saturday

    Saturday: Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. High near 18. South wind 5 to 15 km/h. Chance of precipitation is 80%. New rainfall amounts between 2.5 and 5 mm possible.

    High: 18 °C

    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 10. Calm wind. Chance of precipitation is 20%.

    Low: 10 °C

    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 24. West wind 5 to 15 km/h.

    High: 24 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers, mainly after 2am. Low around 9. Chance of precipitation is 90%. New precipitation amounts between 2.5 and 5 mm possible.

    Low: 9 °C

    Chance
    Showers then
    Showers

  • Monday

    Monday: Showers, mainly before 2pm. High near 14. Chance of precipitation is 80%.

    High: 14 °C

    Showers

  • Monday Night

    Monday Night: A chance of showers before 8pm. Partly cloudy, with a low around 6. Chance of precipitation is 30%.

    Low: 6 °C

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 17.

    High: 17 °C

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 19. West wind 10 to 15 km/h increasing to 15 to 20 km/h in the afternoon. Winds could gust as high as 40 km/h.
Tonight
Mostly cloudy, with a low around 8. Calm wind.
Saturday
Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. High near 18. South wind 5 to 15 km/h. Chance of precipitation is 80%. New rainfall amounts between 2.5 and 5 mm possible.
Saturday Night
A slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 10. Calm wind. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 24. West wind 5 to 15 km/h.
Sunday Night
Showers, mainly after 2am. Low around 9. Chance of precipitation is 90%. New precipitation amounts between 2.5 and 5 mm possible.
Monday
Showers, mainly before 2pm. High near 14. Chance of precipitation is 80%.
Monday Night
A chance of showers before 8pm. Partly cloudy, with a low around 6. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 17.
Tuesday Night
Partly cloudy, with a low around 6.
Wednesday
A chance of showers. Partly sunny, with a high near 18. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 8. Chance of precipitation is 50%.
Thursday
A chance of showers. Partly sunny, with a high near 19. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Hopewell NJ
 40.4°N 74.75°W (Elev. 233 m)
Last Update:
4:08 am EDT May 8, 2026
Forecast Valid:
4am EDT May 8, 2026-6pm EDT May 14, 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