TKHuman Westmont Weather

82°F

Westmont, Illinois, USA

Updated: 19-Aug-2026 1:05pm

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National Weather Service Forecast for: Plainfield, IL
Issued by: National Weather Service Chicago/Romeoville, IL

Updated: 08/19/2026 12:17pm

Westmont, Illinois

This Afternoon Slight Chance Showers And T-Storms	Thursday Sunny	Friday Mostly Sunny then Chance Showers And T-Storms	Saturday Slight Chance Showers And T-Storms	Sunday Mostly Sunny	Monday Mostly Sunny	Tuesday Mostly Sunny
Hi 79 °F	Hi 80 °F	Hi 78 °F	Hi 78 °F	Hi 76 °F	Hi 76 °F	Hi 79 °F

Tonight Slight Chance Showers And T-Storms then Mostly Cloudy	Thursday Night Mostly Clear	Friday Night Chance Showers And T-Storms then Slight Chance Showers And T-Storms	Saturday Night Slight Chance Showers And T-Storms then Mostly Clear	Sunday Night Partly Cloudy	Monday Night Partly Cloudy	Tuesday Night Slight Chance Showers And T-Storms
Lo 62 °F	Lo 60 °F	Lo 63 °F	Lo 60 °F	Lo 58 °F	Lo 61 °F	Lo 63 °F

This Afternoon	A slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 79. East northeast wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Tonight	A slight chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 62. Northeast wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Thursday	Sunny. High near 80, with temperatures falling to around 78 in the afternoon. Northeast wind 0 to 5 mph.
Thursday Night	Mostly clear, with a low around 60. Southeast wind 0 to 5 mph.
Friday	A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78. South southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Friday Night	A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Saturday	A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Saturday Night	A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 60.
Sunday	Mostly sunny, with a high near 76.
Sunday Night	Partly cloudy, with a low around 58.
Monday	Mostly sunny, with a high near 76.
Monday Night	Partly cloudy, with a low around 61.
Tuesday	Mostly sunny, with a high near 79.
Tuesday Night	A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 63.

Forecast from NOAA-NWS for Plainfield, IL.