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National Weather Service Forecast for: Plainfield, IL
Issued by: National Weather Service Chicago/Romeoville, IL
Updated: 07/16/2026 3:11pm

Westmont, Illinois
 
This
Afternoon
This Afternoon: Areas Of Smoke
Areas Of Smoke
Friday

Friday: Patchy Smoke
Patchy Smoke
Saturday

Saturday: Mostly Sunny then Showers And Thunderstorms Likely
Mostly Sunny then Showers And T-Storms Likely
Sunday

Sunday: Sunny
Sunny
Monday

Monday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Tuesday

Tuesday: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Wednesday

Wednesday: Sunny
Sunny
 
Hi 91 °F Hi 88 °F Hi 89 °F Hi 83 °F Hi 86 °F Hi 85 °F Hi 79 °F  
 
Tonight

Tonight: Smoke
Smoke
Friday
Night
Friday Night: Scattered Showers And Thunderstorms then Partly Cloudy
Scattered Showers And T-Storms then Partly Cloudy
Saturday
Night
Saturday Night: Showers And Thunderstorms Likely then Mostly Clear
Showers And T-Storms Likely then Mostly Clear
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday
Night
Monday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Slight Chance Rain Showers then Mostly Clear
Slight Chance Rain Showers then Mostly Clear
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
 
Lo 72 °F Lo 73 °F Lo 66 °F Lo 64 °F Lo 70 °F Lo 62 °F Lo 60 °F  

Air Quality Alert issued July 16 at 1:28PM CDT
Air Quality Alert issued July 16 at 12:02AM CDT
 

This Afternoon
 
Areas of smoke and a slight chance of showers and thunderstorms. Partly sunny. High near 91, with temperatures falling to around 89 in the afternoon. Heat index values as high as 98. East northeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Tonight
 
Smoke and a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Friday
 
Smoke before 11am, then patchy smoke and scattered showers and thunderstorms. Mostly sunny. High near 88, with temperatures falling to around 85 in the afternoon. Heat index values as high as 96. South southwest wind 0 to 5 mph, with gusts as high as 15 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Friday Night
 
Scattered showers and thunderstorms before 10pm. Partly cloudy, with a low around 73. Southwest wind 5 to 10 mph. Chance of precipitation is 50%.
Saturday
 
Showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 89. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Saturday Night
 
Showers and thunderstorms likely before 7pm. Mostly clear, with a low around 66. Chance of precipitation is 70%.
Sunday
 
Sunny, with a high near 83.
Sunday Night
 
Mostly clear, with a low around 64.
Monday
 
A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 86.
Monday Night
 
A chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Tuesday
 
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Tuesday Night
 
A slight chance of rain showers before 7pm. Mostly clear, with a low around 62.
Wednesday
 
Sunny, with a high near 79.
Wednesday Night
 
Mostly clear, with a low around 60.

 

Forecast from NOAA-NWS for Plainfield, IL.

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