Old River Lake, IL Weather Forecast
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Old River Lake Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY |
| Sunny | Clear | Sunny | Clear | Sunny | Mostly Clear | Mostly Sunny | Chance of Showers | Chance of Showers | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 89°FHi: 32°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 51°FLo: 11°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C |
| POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 337 AM CDT Wed Oct 07 2026 

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Issued: 536 AM CDT Wed Oct 7 2026
Key Messages
- Dry conditions are expected through the rest of the work week along with above normal temperatures in the 80s.
- Confidence is increasing that the remnants of a tropical system will impact our region over the weekend. Peak timing for heavy rains has trended slightly faster, primarily focused in the Saturday evening through Sunday morning time period.
Discussion
... Issued at 1259 AM CDT Wed Oct 7 2026
A weak frontal boundary is forecast to sink south towards our region today, making passa...
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