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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Somerville, Somerset Airport (KSMQ)

Lat: 40.62°NLon: 74.67°WElev: 105ft.

Fair

71°F

22°C

Humidity 44%
Wind Speed NA
Barometer 30.22 in (1023.1 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 3 Oct 2:53 pm EDT
Extended Forecast for

Dunellen NJ

  • Tonight

    Tonight: Mostly clear, with a low around 55. East wind around 5 mph becoming calm.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Showers likely, mainly after 2pm. Increasing clouds, with a high near 65. East wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Partly Sunny
    then Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers before 2am. Cloudy, with a low around 56. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Chance
    Showers

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 71. Light west wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 71 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Clear, with a low around 45. Northwest wind around 5 mph.

    Low: 45 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 43.

    Low: 43 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 55. East wind around 5 mph becoming calm.
Sunday
Showers likely, mainly after 2pm. Increasing clouds, with a high near 65. East wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
A chance of showers before 2am. Cloudy, with a low around 56. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 71. Light west wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Clear, with a low around 45. Northwest wind around 5 mph.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Clear, with a low around 43.
Wednesday
Sunny, with a high near 67.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 52.
Friday
Sunny, with a high near 71.
Friday Night
Mostly clear, with a low around 50.
Saturday
Sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dunellen NJ
 40.59°N 74.48°W (Elev. 72 ft)
Last Update:
4:09 am EDT Oct 3, 2026
Forecast Valid:
3pm EDT Oct 3, 2026-6pm EDT Oct 10, 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