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National Weather Service Forecast for: Plainfield, IL
Issued by: National Weather Service Chicago/Romeoville, IL
Updated: 07/16/2026 1:16pm

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: Chance Showers And Thunderstorms then Partly Cloudy
Chance 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 before 3pm, then 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. North wind 0 to 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 a slight chance of showers and thunderstorms between 11am and noon, then patchy smoke and a chance of showers and thunderstorms. Mostly sunny. High near 88, with temperatures falling to around 85 in the afternoon. Heat index values as high as 95. 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
 
A chance of 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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