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Colchester, IL Weather Forecast
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Colchester Weather Forecast
| REST OF TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
 |  |  |  |  | | | | |  |  | |
| Clearing | Clear | Mostly Cloudy | Partly Cloudy | Sunny | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Chance of Showers | Showers | Showers |
| Hi: 85°FHi: 29°C | Lo: 60°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Hi: 85°FHi: 29°C Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C Lo: 65°FLo: 18°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C Lo: 59°FLo: 15°C |
| POP: 50% | POP: 40% | POP: 60% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 816 AM CDT Fri Oct 09 2026 
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Meteorlogic Glosserator
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Issued: 1211 PM CDT Fri Oct 9 2026
Key Messages
- Showers and thunderstorms will come to an end from southwest to northeast by late morning. Rainfall totals this morning between a quarter to a half an inch are possible with isolated amounts up to 1 inch.
- A dry and unseasonably mild weekend is ahead of us.
- Precipitation chances return Monday night through the remainder of next week.
Aviation
/18Z TAFS THROUGH 18Z SATURDAY/... Issued at 1201 PM CDT Fri Oct 9 2026
VFR conditions will prevail through the TAF period, with decreasing clouds ...