National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Computer System Upgrade

A computer system upgrade will cause limited impacts to services between May 13, 2025 and May 15, 2025 Read More >

Current conditions at

Trenton, Mercer County Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

47°F

8°C

Humidity 86%
Wind Speed Calm
Barometer 30.15 in (1020.4 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 11 May 5:53 am EDT
Extended Forecast for

Dayton NJ

  • Today

    Today: Sunny, with a high near 77. Light west wind becoming northwest 5 to 10 mph in the morning.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 51. North wind around 5 mph becoming east in the evening.

    Low: 51 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 79. East wind around 5 mph becoming south in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of showers after 2am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 59. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Mostly Cloudy
    then Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Showers likely, mainly after 5pm. Patchy fog before 8am. Otherwise, cloudy, with a high near 70. Southeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 70 °F

    Showers
    Likely and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after 2am. Cloudy, with a low around 58. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 58 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely. Cloudy, with a high near 67. Chance of precipitation is 70%.

    High: 67 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.

    Low: 58 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 73. Chance of precipitation is 40%.

    High: 73 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 77. Light west wind becoming northwest 5 to 10 mph in the morning.
Tonight
Mostly clear, with a low around 51. North wind around 5 mph becoming east in the evening.
Monday
Mostly sunny, with a high near 79. East wind around 5 mph becoming south in the afternoon.
Monday Night
A chance of showers after 2am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 59. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Showers likely, mainly after 5pm. Patchy fog before 8am. Otherwise, cloudy, with a high near 70. Southeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Showers likely, mainly after 2am. Cloudy, with a low around 58. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
Showers likely. Cloudy, with a high near 67. Chance of precipitation is 70%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly cloudy, with a high near 73. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 61.
Friday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Friday Night
A chance of showers. Partly cloudy, with a low around 64. Chance of precipitation is 40%.
Saturday
A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dayton NJ
 40.37°N 74.49°W (Elev. 98 ft)
Last Update:
4:13 am EDT May 11, 2025
Forecast Valid:
6am EDT May 11, 2025-6pm EDT May 17, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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