Hillsboro, IL Weather Forecast
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Hillsboro Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY |
| Clear | Sunny | Mostly Clear | Sunny | Clear | Mostly Sunny | Chance of T-Storm | Mostly Cloudy | Clearing | Mostly Clear | Mostly Clear | Partly Cloudy |
| Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 60°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 89°FHi: 32°C Lo: 55°FLo: 13°C | Hi: 89°FHi: 32°C Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C Lo: 49°FLo: 9°C |
| POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 943 PM CDT Wed Oct 07 2026 

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Issued: 1028 PM CDT Wed Oct 7 2026
Key Messages
- Dry weather with unseasonably warm temperatures are forecast through early next week.
- The remnants of Tropical Cyclone Isaias may bring (beneficial) rain to parts of southeast Missouri and southwest Illinois this weekend, but there remains a lot of uncertainty with its track.
Aviation
/00Z TAFS THROUGH 06Z FRIDAY/... Issued at 954 PM CDT Wed Oct 7 2026
Confidence is increasing in the potential for patchy MVFR fog in river valleys, so added mention to the TAFs for the 06z issuance. KSUS ...
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