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.

Fog/Mist

48°F

9°C

Humidity 96%
Wind Speed Vrbl 3 mph
Barometer 29.91 in (1012.8 mb)
Dewpoint 47°F (8°C)
Visibility 3.00 mi
Last update 19 Apr 12:53 am EDT
Extended Forecast for

South Plainfield NJ

Freeze Watch April 21, 12:00am until April 21, 09:00am
Coastal Flood Advisory until April 19, 02:00am
Click here for hazard details and duration
Freeze Watch
...
  •  
    Coastal Flood Advisory until April 19, 02:00am

    NOW until 2:00am Sun

    Coastal Flood Advisory

  • Overnight

    Low: 49 °F

    Chance
    Showers and
    Areas Fog

  • Sunday

    Sunday: Showers, mainly before 2pm. High near 56. Northwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. West wind around 5 mph becoming calm in the evening.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers. Mostly sunny, with a high near 53. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 53 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Patchy frost after 1am. Otherwise, mostly clear, with a low around 32. North wind around 5 mph.

    Low: 32 °F

    Partly Cloudy
    then Patchy
    Frost

  • Tuesday

    Tuesday: Areas of frost before 9am. Otherwise, sunny, with a high near 55.

    High: 55 °F

    Areas Frost
    then Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of showers, mainly after 5am. Areas of fog. Otherwise, cloudy, with a low around 49. East wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers, mainly before 2pm. High near 56. Northwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Partly cloudy, with a low around 39. West wind around 5 mph becoming calm in the evening.
Monday
A slight chance of showers. Mostly sunny, with a high near 53. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.
Monday Night
Patchy frost after 1am. Otherwise, mostly clear, with a low around 32. North wind around 5 mph.
Tuesday
Areas of frost before 9am. Otherwise, sunny, with a high near 55.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Mostly cloudy, with a high near 66.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 50.
Friday
Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 51.
Saturday
A chance of showers. Partly sunny, with a high near 67. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Plainfield NJ
 40.58°N 74.42°W (Elev. 89 ft)
Last Update:
4:11 pm EDT Apr 18, 2026
Forecast Valid:
1am EDT Apr 19, 2026-6pm EDT Apr 25, 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