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St. Charles Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
 |  | | |  | | | |  | |  |  |
| Partly Cloudy | Mostly Sunny | Partly Cloudy | Sunny | Clear | Mostly Sunny | Clear | Clear | Partly Cloudy | Partly Cloudy | Chance of Rain | Chance of Rain |
| Lo: 25°FLo: -4°C | Hi: 39°FHi: 4°C | Lo: 21°FLo: -6°C | Hi: 41°FHi: 5°C | Lo: 25°FLo: -4°C | Hi: 45°FHi: 7°C | Hi: 49°FHi: 9°C Lo: 30°FLo: -1°C | Hi: 49°FHi: 9°C Lo: 30°FLo: -1°C | Hi: 55°FHi: 13°C Lo: 39°FLo: 4°C | Hi: 55°FHi: 13°C Lo: 39°FLo: 4°C | Lo: 45°FLo: 7°C | Hi: 55°FHi: 13°C |
| POP: 30% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 357 PM CST Thu Nov 12 2026 
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Issued: 514 PM CST Thu Nov 12 2026
Key Messages
- Cooler temperatures for Friday and this weekend with highs in the upper 30s to 40s. Morning lows will likely fall into the 20s for most locations.
- Warming trend into next week with highs returning into the 50s across the area. There is a low chance (10-40%) for highs to reach 60 degrees by mid-week.
- Aside from any isolated flurries/sprinkles (10% chance) today and tonight, mostly dry conditions are expected into early next week.
Discussion
... Issued at 1255 PM CST Thu Nov 12 2026
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