NWS Forecast for Plainfield NJ

National Weather Service Forecast for: Plainfield NJ
Issued by: National Weather Service New York, NY

Updated: 2:24 am EDT Jun 30, 2026

Overnight Mostly Clear	Tuesday Mostly Sunny	Tuesday Night Slight Chance T-storms	Wednesday Sunny then Slight Chance T-storms	Wednesday Night Mostly Clear	Thursday Hot	Thursday Night Clear	Friday Sunny then Chance Showers	Friday Night Chance Showers
Lo 66 °F	Hi 92 °F	Lo 70 °F	Hi 98 °F	Lo 76 °F	Hi 102 °F	Lo 80 °F	Hi 101 °F	Lo 77 °F

Hazardous Weather Outlook
Extreme Heat Watch
Air Quality Alert
Extreme Heat Warning

Overnight	Mostly clear, with a low around 66. Calm wind.
Tuesday	Mostly sunny, with a high near 92. Calm wind becoming southwest 5 to 9 mph in the morning.
Tuesday Night	A 20 percent chance of showers and thunderstorms after 11pm. Partly cloudy, with a low around 70. Southwest wind 6 to 9 mph, with gusts as high as 20 mph.
Wednesday	A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 98. Heat index values as high as 107. Southwest wind around 8 mph.
Wednesday Night	Mostly clear, with a low around 76. Southwest wind around 6 mph.
Thursday	Sunny and hot, with a high near 102.
Thursday Night	Clear, with a low around 80.
Friday	A 30 percent chance of showers after 2pm. Sunny and hot, with a high near 101.
Friday Night	A 30 percent chance of showers before 2am. Partly cloudy, with a low around 77.
Independence Day	A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 99.
Saturday Night	A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
Sunday	A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Sunday Night	A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Monday	A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.

Forecast from NOAA-NWS for Plainfield NJ.