| National Weather Service Forecast for:
Plainfield, IL Issued by: National Weather Service Chicago/Romeoville, IL |
||||||||||||||||||||||||||||||||||||||||
| Updated: 08/31/2026 4:11pm | ||||||||||||||||||||||||||||||||||||||||
| Westmont, Illinois | ||||||||||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||||||||
Heat Advisory issued August 31 at 12:24PM CDT until September 2 at 9:00PM CDT
Heat Advisory issued August 31 at 12:24PM CDT until September 1 at 9:00PM CDT
| This Afternoon |
Scattered showers and thunderstorms. Mostly sunny, with a high near 89. Heat index values as high as 97. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. |
| Tonight |
Scattered showers and thunderstorms before 10pm. Partly cloudy, with a low around 73. Southwest wind 5 to 10 mph. Chance of precipitation is 40%. |
| Tuesday |
Mostly sunny, with a high near 91. Heat index values as high as 103. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. |
| Tuesday Night |
Mostly clear, with a low around 73. Heat index values as high as 99. South southwest wind 5 to 10 mph. |
| Wednesday |
Sunny, with a high near 92. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. |
| Wednesday Night |
Mostly clear, with a low around 74. |
| Thursday |
A chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 88. |
| Thursday Night |
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. |
| Friday |
A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 88. |
| Friday Night |
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. |
| Saturday |
A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86. |
| Saturday Night |
Partly cloudy, with a low around 67. |
| Sunday |
A slight chance of rain showers between 7am and 1pm. Mostly sunny, with a high near 83. |
| Sunday Night |
Partly cloudy, with a low around 64. |
Forecast from NOAA-NWS for Plainfield, IL.