Forecast

    Forecast for South Plainfield, NJ | Forecast Periods: 14
    Monday
    Mar 16
    2026

    South Plainfield, NJ

    Updated: 4:14 PM EDT

    67°F

    Showers And Thunderstorms

    15 mph S
    Precipitation: 86%

    Showers and thunderstorms. Some of the storms could be severe. Cloudy, with a high near 67. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

    Hourly Forecast

    MON16:00
    66°F
    Showers And Thunderstorms Likely
    Dewpoint:15.6°Precip:64%Humidity:81%Wind:15 mph S
    MON17:00
    65°F
    Showers And Thunderstorms
    Dewpoint:15°Precip:86%Humidity:81%Wind:15 mph S
    MON18:00
    65°F
    Showers And Thunderstorms
    Dewpoint:15°Precip:82%Humidity:81%Wind:15 mph S
    MON19:00
    64°F
    Showers And Thunderstorms
    Dewpoint:14.4°Precip:93%Humidity:81%Wind:15 mph S
    TUE20:00
    63°F
    Showers And Thunderstorms Likely
    Dewpoint:13.9°Precip:73%Humidity:81%Wind:20 mph S
    TUE21:00
    63°F
    Chance Showers And Thunderstorms
    Dewpoint:14.4°Precip:53%Humidity:84%Wind:25 mph S
    TUE22:00
    62°F
    Chance Showers And Thunderstorms
    Dewpoint:13.3°Precip:43%Humidity:81%Wind:30 mph S
    TUE23:00
    62°F
    Showers And Thunderstorms
    Dewpoint:13.3°Precip:97%Humidity:81%Wind:30 mph S
    TUE00:00
    55°F
    Rain Showers
    Dewpoint:9.4°Precip:93%Humidity:80%Wind:25 mph SW
    TUE01:00
    47°F
    Rain Showers Likely
    Dewpoint:4.4°Precip:62%Humidity:76%Wind:20 mph SW
    TUE02:00
    43°F
    Slight Chance Rain Showers
    Dewpoint:2.2°Precip:21%Humidity:76%Wind:20 mph W
    TUE03:00
    42°F
    Mostly Cloudy
    Dewpoint:0.6°Precip:9%Humidity:70%Wind:20 mph W
    TUE04:00
    39°F
    Mostly Cloudy
    Dewpoint:-1.1°Precip:0%Humidity:70%Wind:20 mph W
    TUE05:00
    36°F
    Mostly Clear
    Dewpoint:-3.3°Precip:0%Humidity:67%Wind:20 mph W
    TUE06:00
    34°F
    Sunny
    Dewpoint:-5°Precip:0%Humidity:64%Wind:20 mph W
    TUE07:00
    33°F
    Mostly Sunny
    Dewpoint:-6.1°Precip:0%Humidity:61%Wind:20 mph W
    TUE08:00
    31°F
    Mostly Sunny
    Dewpoint:-7.8°Precip:0%Humidity:58%Wind:20 mph W
    TUE09:00
    33°F
    Sunny
    Dewpoint:-7.2°Precip:0%Humidity:56%Wind:20 mph W
    TUE10:00
    35°F
    Mostly Sunny
    Dewpoint:-7.8°Precip:0%Humidity:49%Wind:20 mph W
    TUE11:00
    36°F
    Mostly Sunny
    Dewpoint:-8.3°Precip:0%Humidity:45%Wind:20 mph W
    TUE12:00
    38°F
    Partly Sunny
    Dewpoint:-7.8°Precip:0%Humidity:44%Wind:20 mph W
    TUE13:00
    39°F
    Partly Sunny
    Dewpoint:-8.3°Precip:0%Humidity:40%Wind:20 mph W
    TUE14:00
    40°F
    Mostly Sunny
    Dewpoint:-8.3°Precip:0%Humidity:39%Wind:20 mph W
    TUE15:00
    41°F
    Mostly Sunny
    Dewpoint:-8.3°Precip:0%Humidity:37%Wind:20 mph W

    Extended Forecast

    Tonight

    Mon, Mar 16
    31°F
    Showers And Thunderstorms
    15 mph SW
    Precipitation: 97%
    Showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and 11pm, then showers and thunderstorms between 11pm and 3am. Some of the storms could be severe. Mostly cloudy, with a low around 31. Southwest wind 15 to 30 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Tuesday

    Tue, Mar 17
    42°F
    Mostly Sunny then Scattered Snow Showers
    20 mph W
    Precipitation: 0%
    Scattered snow showers after 5pm. Mostly sunny, with a high near 42. West wind around 20 mph, with gusts as high as 40 mph. New rainfall amounts less than a tenth of an inch possible.

    Tuesday Night

    Tue, Mar 17
    24°F
    Scattered Snow Showers then Partly Cloudy
    5 mph W
    Precipitation: 0%
    Scattered snow showers before 7pm. Partly cloudy, with a low around 24. West wind 5 to 15 mph, with gusts as high as 35 mph.

    Wednesday

    Wed, Mar 18
    41°F
    Mostly Sunny
    5 mph SW
    Precipitation: 0%
    Mostly sunny, with a high near 41. Southwest wind around 5 mph.

    Wednesday Night

    Wed, Mar 18
    28°F
    Partly Cloudy
    0 mph S
    Precipitation: 1%
    Partly cloudy, with a low around 28.

    Thursday

    Thu, Mar 19
    49°F
    Partly Sunny
    0 mph S
    Precipitation: 2%
    Partly sunny, with a high near 49.

    Thursday Night

    Thu, Mar 19
    35°F
    Mostly Cloudy then Slight Chance Light Rain
    0 mph SW
    Precipitation: 18%
    A slight chance of rain after 2am. Mostly cloudy, with a low around 35.

    Friday

    Fri, Mar 20
    57°F
    Slight Chance Light Rain then Partly Sunny
    0 mph W
    Precipitation: 18%
    A slight chance of rain before 8am. Partly sunny, with a high near 57.

    Friday Night

    Fri, Mar 20
    38°F
    Chance Light Rain
    5 mph W
    Precipitation: 39%
    A chance of rain after 8pm. Mostly cloudy, with a low around 38. Chance of precipitation is 40%.

    Saturday

    Sat, Mar 21
    55°F
    Chance Light Rain
    5 mph W
    Precipitation: 39%
    A chance of rain. Partly sunny, with a high near 55. Chance of precipitation is 40%.

    Saturday Night

    Sat, Mar 21
    36°F
    Chance Light Rain
    5 mph SW
    Precipitation: 34%
    A chance of rain. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.

    Sunday

    Sun, Mar 22
    53°F
    Chance Light Rain
    5 mph W
    Precipitation: 32%
    A chance of rain. Mostly cloudy, with a high near 53. Chance of precipitation is 30%.

    Sunday Night

    Sun, Mar 22
    33°F
    Slight Chance Light Rain then Slight Chance Rain And Snow
    5 mph NW
    Precipitation: 23%
    A slight chance of rain before 2am, then a slight chance of rain and snow. Mostly cloudy, with a low around 33.

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