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National Weather Service Forecast for: Plainfield, IL
Issued by: National Weather Service Chicago/Romeoville, IL
Updated: 07/19/2026 8:41pm

Westmont, Illinois
 
  Monday

Monday: Smoke
Smoke
Tuesday

Tuesday: Chance Showers And Thunderstorms then Mostly Sunny
Chance Showers And T-Storms then Mostly Sunny
Wednesday

Wednesday: Sunny
Sunny
Thursday

Thursday: Sunny
Sunny
Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Mostly Sunny
Mostly Sunny
  Hi 85 °F Hi 84 °F Hi 76 °F Hi 81 °F Hi 81 °F Hi 85 °F Hi 88 °F
 
Tonight

Tonight: Smoke
Smoke
Monday
Night
Monday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
 
Lo 63 °F Lo 72 °F Lo 61 °F Lo 57 °F Lo 60 °F Lo 63 °F Lo 66 °F  

Air Quality Alert issued July 19 at 12:50PM CDT
Air Quality Alert issued July 19 at 1:06AM CDT
Air Quality Alert issued July 18 at 12:31PM CDT
 

Tonight
 
Smoke. Partly cloudy, with a low around 63. East southeast wind 0 to 5 mph.
Monday
 
Smoke before 1pm. Mostly sunny, with a high near 85. South wind 0 to 15 mph, with gusts as high as 25 mph.
Monday Night
 
Showers and thunderstorms likely after 7pm. Mostly cloudy, with a low around 72. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
 
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 84. West northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Tuesday Night
 
Mostly clear, with a low around 61. North wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
 
Sunny, with a high near 76.
Wednesday Night
 
Mostly clear, with a low around 57.
Thursday
 
Sunny, with a high near 81.
Thursday Night
 
Partly cloudy, with a low around 60.
Friday
 
Mostly sunny, with a high near 81.
Friday Night
 
Partly cloudy, with a low around 63.
Saturday
 
Sunny, with a high near 85.
Saturday Night
 
Mostly clear, with a low around 66.
Sunday
 
Mostly sunny, with a high near 88.

 

Forecast from NOAA-NWS for Plainfield, IL.

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