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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Somerville, Somerset Airport (KSMQ)

Lat: 40.62°NLon: 74.67°WElev: 105ft.

Mostly Cloudy

68°F

20°C

Humidity 96%
Wind Speed Calm
Barometer 30.00 in (1016.0 mb)
Dewpoint 67°F (19°C)
Visibility 8.00 mi
Last update 28 Aug 8:53 am EDT
Extended Forecast for

Dunellen NJ

  • Today

    Today: A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Calm wind. Chance of precipitation is 20%.

    High: 83 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 61. Calm wind becoming north around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 82. North wind around 5 mph becoming calm.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers before 11pm, then a slight chance of showers and thunderstorms between 11pm and 2am. Partly cloudy, with a low around 68. Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Partly sunny, with a high near 86.

    High: 86 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.

    High: 86 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Calm wind. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 61. Calm wind becoming north around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 82. North wind around 5 mph becoming calm.
Saturday Night
Mostly clear, with a low around 61. Calm wind.
Sunday
Mostly sunny, with a high near 85. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
A slight chance of showers before 11pm, then a slight chance of showers and thunderstorms between 11pm and 2am. Partly cloudy, with a low around 68. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 86.
Monday Night
Mostly cloudy, with a low around 68.
Tuesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
Wednesday
Showers likely. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Thursday
Partly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dunellen NJ
 40.59°N 74.48°W (Elev. 72 ft)
Last Update:
4:09 am EDT Aug 28, 2026
Forecast Valid:
9am EDT Aug 28, 2026-6pm EDT Sep 3, 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