| NWS Forecast for: Saint Charles IL Issued by: National Weather Service Chicago, IL Last Update: 4:12 pm CDT Jul 13, 2025 |  |
Tonight: Partly cloudy, with a low around 17. West northwest wind 5 to 10 km/h becoming southwest after midnight. Monday: Sunny, with a high near 31. West southwest wind 5 to 10 km/h. Monday Night: Mostly clear, with a low around 19. West wind 5 to 10 km/h becoming southeast after midnight. Tuesday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 32. Heat index values as high as 35. South wind 5 to 10 km/h, with gusts as high as 20 km/h. Chance of precipitation is 20%. Tuesday Night: A slight chance of thunderstorms before 1am, then a slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Partly cloudy, with a low around 22. South wind 5 to 10 km/h. Chance of precipitation is 20%. Wednesday: A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 31. Chance of precipitation is 50%. Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21. Thursday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 29. Thursday Night: A chance of showers before 1am. Mostly cloudy, with a low around 18. Friday: Partly sunny, with a high near 27. Friday Night: Partly cloudy, with a low around 17. Saturday: A chance of showers. Partly sunny, with a high near 28. Saturday Night: A chance of showers. Mostly cloudy, with a low around 19. Sunday: A chance of showers. Mostly sunny, with a high near 29. | |
| Saint Charles IL 41.9°N 88.32°W | |
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