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Rock Falls Township High School, IL Weather Forecast
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Rock Falls Township High School Weather Forecast
| REST OF TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 | |  |  |  |  | | |  | | | |
| Patchy Fog | Patchy Fog | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 60°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C Lo: 61°FLo: 16°C |
| POP: 70% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 126 AM CDT Thu Aug 20 2026 
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Issued: 148 AM CDT Thu Aug 20 2026
Key Messages
- There will be the chance for fog through the remainder of tonight into Thursday morning, especially for areas south of Interstate 80. Elsewhere, patchy dense fog is possible, especially in river valleys.
- Another system will pass through the area Friday, bringing the chance for afternoon showers/storms along a passing cold front. A few stronger storms are possible.
- A stretch of quiet and mostly dry weather will be seen this weekend and into next week, wit...