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City of Mount Sterling, ILMount Sterling, IL Weather Forecast
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Mount Sterling Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | VETERANS DAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  | |  |  |  | |  | | | | |
| Mostly Clear | Patchy Fog | Clear | Sunny | Partly Cloudy | Chance of Showers | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear |
| Lo: 39°FLo: 4°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 39°FLo: 4°C | Hi: 49°FHi: 9°C Lo: 30°FLo: -1°C | Hi: 49°FHi: 9°C Lo: 30°FLo: -1°C | Hi: 45°FHi: 7°C Lo: 29°FLo: -2°C | Hi: 45°FHi: 7°C Lo: 29°FLo: -2°C | Hi: 50°FHi: 10°C Lo: 35°FLo: 2°C |
| POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1227 AM CST Mon Nov 09 2026 
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Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 208 AM CST Mon Nov 9 2026
Key Messages
- Above average temperatures will persist into Wednesday before colder temperatures arrive during the second half of the week.
- There is a 40 to 60 percent chance of showers, perhaps a thunderstorm or two, mainly along/east of the Mississippi River on Wednesday.
Aviation
/06Z TAFS THROUGH 12Z TUESDAY/... Issued at 945 PM CST Sun Nov 8 2026
Latest guidance isn`t as bullish on fog tonight. While there may be less widespread 2-5 mile fog overall, still think IFR steam fog with visibilities at...