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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Somerville, Somerset Airport (KSMQ)

Lat: 40.62°NLon: 74.67°WElev: 105ft.

Overcast

41°F

5°C

Humidity 51%
Wind Speed Vrbl 5 mph
Barometer 30.04 in (1017.4 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 7 Dec 1:53 pm EST
Extended Forecast for

South Plainfield NJ

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 41. Southwest wind around 5 mph.

    High: 41 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 24. Light and variable wind becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 20 mph.

    Low: 24 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 31. North wind 5 to 15 mph.

    High: 31 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13. North wind around 5 mph becoming calm.

    Low: 13 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. Calm wind becoming south around 5 mph in the afternoon.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain. Cloudy, with a high near 46. Chance of precipitation is 50%.

    High: 46 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.

    Low: 33 °F

    Chance Rain

  • Thursday

    Thursday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 41. Southwest wind around 5 mph.
Tonight
Partly cloudy, with a low around 24. Light and variable wind becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Monday
Mostly sunny, with a high near 31. North wind 5 to 15 mph.
Monday Night
Partly cloudy, with a low around 13. North wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 35. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
A chance of rain. Cloudy, with a high near 46. Chance of precipitation is 50%.
Wednesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 43.
Thursday Night
A chance of rain and snow after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 40%.
Friday Night
A chance of snow. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 32.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Plainfield NJ
 40.58°N 74.42°W (Elev. 89 ft)
Last Update:
6:32 am EST Dec 7, 2025
Forecast Valid:
2pm EST Dec 7, 2025-6pm EST Dec 13, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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