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

The Work Week will Begin with Unsettled Weather from the Southern Plains to the Great Lakes

Unsettled weather is forecast to continue through the first half of the work week from the Southern Plains to the Great Lakes as a frontal system moves through. Isolated to scattered severe thunderstorms and flash flooding will be possible each day. Meanwhile, scattered showers and thunderstorms are expected across the Southwest and California, with isolated flash flooding possible. Read More >

Current conditions at

Trenton-Mercer Airport (KTTN)

Lat: 40.28°NLon: 74.82°WElev: 210ft.

Fair

54°F

12°C

Humidity 87%
Wind Speed N 5 mph
Barometer 30.21 in (1022.3 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 21 Sep 11:53 pm EDT
Extended Forecast for

Dayton NJ

  • Overnight

    Overnight: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming south around 5 mph.

    High: 78 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58. Southeast wind around 5 mph becoming calm.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 80. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Cloudy, with a low around 62. Chance of precipitation is 50%.

    Low: 62 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.

    High: 72 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.

    Low: 63 °F

    Chance
    Showers

Detailed Forecast

Overnight
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 49. Calm wind.
Monday
Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming south around 5 mph.
Monday Night
Partly cloudy, with a low around 58. Southeast wind around 5 mph becoming calm.
Tuesday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 80. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers. Cloudy, with a low around 62. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Saturday
A chance of showers. Mostly cloudy, with a high near 75. Chance of precipitation is 40%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.
Sunday
A chance of showers. Partly sunny, with a high near 75. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Dayton NJ
 40.37°N 74.52°W (Elev. 98 ft)
Last Update:
5:06 pm EDT Sep 21, 2025
Forecast Valid:
12am EDT Sep 22, 2025-6pm EDT Sep 28, 2025
 
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