National Weather Service Forecast for: Plainfield NJ
Issued by: National Weather Service New York, NY
Updated: 11:53 pm EDT Jun 21, 2026
 
Today

Today: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 79. Calm wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Chance
Showers then
Showers
 Tonight

Tonight: Showers and possibly a thunderstorm. Low around 64. South wind 3 to 6 mph. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Showers

 Tuesday

Tuesday: A 50 percent chance of showers before 2pm. Partly sunny, with a high near 81. North wind 3 to 7 mph.
Chance
Showers
 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 61. Northwest wind 3 to 5 mph.
Partly Cloudy

 Wednesday

Wednesday: Sunny, with a high near 84. Northwest wind 3 to 5 mph.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 62.
Mostly Clear

 Thursday

Thursday: Mostly sunny, with a high near 86.
Mostly Sunny

 Thursday
Night
Thursday Night: A 50 percent chance of showers after 8pm. Mostly cloudy, with a low around 65.
Chance
Showers
 Friday

Friday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%.
Showers
Likely
Hi 79 °F Lo 64 °F Hi 81 °F Lo 61 °F Hi 84 °F Lo 62 °F Hi 86 °F Lo 65 °F Hi 85 °F

Hazardous Weather Outlook
Flood Watch
 

Today
 
 A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 79. Calm wind becoming southeast 5 to 9 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
 
 Showers and possibly a thunderstorm. Low around 64. South wind 3 to 6 mph. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
 
 A 50 percent chance of showers before 2pm. Partly sunny, with a high near 81. North wind 3 to 7 mph.
Tuesday Night
 
 Partly cloudy, with a low around 61. Northwest wind 3 to 5 mph.
Wednesday
 
 Sunny, with a high near 84. Northwest wind 3 to 5 mph.
Wednesday Night
 
 Mostly clear, with a low around 62.
Thursday
 
 Mostly sunny, with a high near 86.
Thursday Night
 
 A 50 percent chance of showers after 8pm. Mostly cloudy, with a low around 65.
Friday
 
 A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%.
Friday Night
 
 Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Saturday
 
 Mostly sunny, with a high near 87.
Saturday Night
 
 Partly cloudy, with a low around 66.
Sunday
 
 Mostly sunny, with a high near 89.

 

Forecast from NOAA-NWS for Plainfield NJ.