| National Weather Service Forecast for:
Naperville, IL Issued by: National Weather Service Chicago/Romeoville, IL |
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| Updated: Thu, 03-Sep-2026 9:21pm CDT | ||||||||||||||||||||||||||||||||||||||||
| Naperville | ||||||||||||||||||||||||||||||||||||||||
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| Tonight |
Mostly clear, with a low around 75. South wind around 5 mph. |
| Friday |
A slight chance of showers and thunderstorms between 7am and 11am. Mostly sunny. High near 92, with temperatures falling to around 90 in the afternoon. Heat index values as high as 100. Southwest wind 5 to 10 mph. Chance of precipitation is 20%. |
| Friday Night |
A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly clear, with a low around 71. Heat index values as high as 97. Southeast wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible. |
| Saturday |
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 86. Northeast wind 5 to 10 mph. Chance of precipitation is 50%. |
| Saturday Night |
Partly cloudy, with a low around 66. East northeast wind 5 to 10 mph. |
| Sunday |
Mostly sunny, with a high near 82. |
| Sunday Night |
Partly cloudy, with a low around 63. |
| Labor Day |
Mostly sunny, with a high near 82. |
| Monday Night |
Partly cloudy, with a low around 65. |
| Tuesday |
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 86. |
| Tuesday Night |
A chance of rain showers. Partly cloudy, with a low around 71. |
| Wednesday |
A chance of rain showers before 1pm. Mostly sunny, with a high near 88. |
| Wednesday Night |
A chance of rain showers after 7pm. Partly cloudy, with a low around 69. |
| Thursday |
A chance of rain showers before 1pm. Mostly sunny, with a high near 84. |
Forecast from NOAA-NWS
for Naperville, IL.
Animated forecast icons courtesy of www.meteotreviglio.com.