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St. Charles Weather Forecast
| REST OF TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  |  |  |  | |  | | | | |
| Mostly Clear | Sunny | Partly Cloudy | Partly Sunny | Chance of Rain | Chance of Showers | Partly Cloudy | Chance of Rain | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny |
| Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 60°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C |
| POP: 30% | POP: 50% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 108 AM EST Tue Nov 03 2026 
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Issued: 114 AM EST Tue Nov 3 2026
Key Messages
- 1. Light rainfall amounts possible late this week.
Discussion
... Key Message 1: Light rainfall amounts possible late this week.
An upper low and associated deep trough currently over the southern Plains are expected to slide east through midweek. A trailing frontal boundary approaches the Southeast, As the system approaches, the main energy is forecast to lift northward, limiting moisture advection to the area initially. The frontal boundary also looks to slow down some, keeping most o...