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

Hazardous Weather Conditions

Current conditions at

Somerville, Somerset Airport (KSMQ)

Lat: 40.62°NLon: 74.67°WElev: 105ft.

Fair

31°C

88°F

Humidity 63%
Wind Speed Calm
Barometer 1015.8 mb (30.00 in)
Dewpoint 23°C (74°F)
Visibility 14 km
Heat Index36°C (97°F)
Last update 15 Jul 5:53 pm EDT
Extended Forecast for

Dunellen NJ

Flood Watch July 16, 03:00pm until July 17, 03:00am
Click here for hazard details and duration
Flood Watch

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 23. Calm wind. Chance of precipitation is 20%.

    Low: 23 °C

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly after 5pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 33. South wind 5 to 10 km/h. Chance of precipitation is 30%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    High: 33 °C

    Mostly Sunny
    then Heavy
    Rain

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 23. Southwest wind 10 to 15 km/h. Chance of precipitation is 50%. New rainfall amounts between 7.5 mm and 1 cm possible.

    Low: 23 °C

    Heavy Rain

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 33. Heat index values as high as 39. Southwest wind 10 to 15 km/h. Chance of precipitation is 60%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    High: 33 °C

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 24. Southwest wind 5 to 10 km/h. Chance of precipitation is 60%. New precipitation amounts of less than 1 mm, except higher amounts possible in thunderstorms.

    Low: 24 °C

    Showers
    Likely then
    Partly Cloudy

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 31. Chance of precipitation is 20%.

    High: 31 °C

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 19.

    Low: 19 °C

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 30.

    High: 30 °C

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.

    Low: 21 °C

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 23. Calm wind. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms, mainly after 5pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 33. South wind 5 to 10 km/h. Chance of precipitation is 30%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 23. Southwest wind 10 to 15 km/h. Chance of precipitation is 50%. New rainfall amounts between 7.5 mm and 1 cm possible.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 33. Heat index values as high as 39. Southwest wind 10 to 15 km/h. Chance of precipitation is 60%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 24. Southwest wind 5 to 10 km/h. Chance of precipitation is 60%. New precipitation amounts of less than 1 mm, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 31. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 19.
Saturday
Mostly sunny, with a high near 30.
Saturday Night
A chance of showers after 2am. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 30. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 30.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 29. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Dunellen NJ
 40.59°N 74.48°W (Elev. 72 m)
Last Update:
4:13 pm EDT Jul 15, 2025
Forecast Valid:
6pm EDT Jul 15, 2025-6pm EDT Jul 22, 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