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

Areas of Showers and Thunderstorms to Start the Work Week

Areas of rain and thunderstorms are forecast Monday across the central and eastern states. Some mixed rain and snow is possible in the high Sierra Mountains. Heavy to excessive rain may bring flooding in the central Appalachians. Read More >

Current conditions at

Somerville, Somerset Airport (KSMQ)

Lat: 40.62°NLon: 74.67°WElev: 105ft.

Overcast

66°F

19°C

Humidity 93%
Wind Speed Calm
Barometer 29.93 in (1013.5 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 21 Sep 12:53 am EDT
Extended Forecast for

South Plainfield NJ

  • Overnight

    Overnight: A chance of showers before 2am. Mostly cloudy, with a low around 59. North wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Chance
    Showers

  • Monday

    Monday: Increasing clouds, with a high near 70. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 70 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Showers likely, mainly after 4am. Cloudy, with a low around 55. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 55 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, mainly between 7am and 2pm. Cloudy, with a high near 63. Northeast wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 63 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 52. Northeast wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 8am. Mostly cloudy, with a high near 64. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A chance of showers after 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
A chance of showers before 2am. Mostly cloudy, with a low around 59. North wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Increasing clouds, with a high near 70. North wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Showers likely, mainly after 4am. Cloudy, with a low around 55. Northeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Showers likely, mainly between 7am and 2pm. Cloudy, with a high near 63. Northeast wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 52. Northeast wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of showers after 8am. Mostly cloudy, with a high near 64. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 51.
Thursday
Mostly cloudy, with a high near 64.
Thursday Night
A chance of showers after 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 68. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 72. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Plainfield NJ
 40.58°N 74.42°W (Elev. 89 ft)
Last Update:
6:15 pm EDT Sep 20, 2026
Forecast Valid:
1am EDT Sep 21, 2026-6pm EDT Sep 27, 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