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St. Charles Weather Forecast
| REST OF TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT |
 |  |  | | | | | | |  | | |
| Partly Cloudy | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Sunny | Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 25°FLo: -4°C | Hi: 40°FHi: 4°C | Lo: 21°FLo: -6°C | Hi: 41°FHi: 5°C | Lo: 21°FLo: -6°C | Hi: 45°FHi: 7°C | Lo: 29°FLo: -2°C | Hi: 49°FHi: 9°C Lo: 31°FLo: -1°C | Hi: 49°FHi: 9°C Lo: 31°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 |
POP = Probability of Precipitation.
Weather Outlook Updated: 1226 AM CST Fri Nov 13 2026 
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Issued: 1149 PM CST Thu Nov 12 2026
Key Messages
- Cooler temperatures for today 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 for the latter half of the week.
- Aside from any isolated flurries or sprinkles (10% chance) across north-central Wisconsin through midday, mostly dry conditions are expected into the middle of next wee...