| NWS Forecast for: Saint Charles IL Issued by: National Weather Service Chicago, IL Last Update: 10:41 pm CDT Jun 12, 2026 | |
| Tonight: Clear, with a low around 60. Southwest wind around 5 mph, with gusts as high as 15 mph. Saturday: Increasing clouds, with a high near 85. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Saturday Night: Showers and thunderstorms, mainly before 2am. Low around 59. West southwest wind 5 to 10 mph becoming north northwest after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible. Sunday: Mostly sunny, with a high near 72. North northwest wind 10 to 15 mph, with gusts as high as 25 mph. Sunday Night: Partly cloudy, with a low around 51. West wind 5 to 10 mph, with gusts as high as 20 mph. Monday: Mostly sunny, with a high near 74. Monday Night: Partly cloudy, with a low around 53. Tuesday: Showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 75. Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Wednesday: Showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 76. Wednesday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 61. Thursday: Mostly sunny, with a high near 76. Thursday Night: Partly cloudy, with a low around 57. Juneteenth: Mostly sunny, with a high near 79. | |
| Saint Charles IL 41.9°N 88.32°W | |
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