Meredosia, IL Weather Forecast
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Meredosia Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | SATURDAY | SUNDAY |
| Clear | Sunny | Partly Cloudy | Sunny | Mostly Clear | Clear | Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Lo: 39°FLo: 4°C | Hi: 71°FHi: 22°C | Lo: 40°FLo: 4°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 79°FHi: 26°C Lo: 45°FLo: 7°C | Hi: 79°FHi: 26°C Lo: 45°FLo: 7°C | Hi: 79°FHi: 26°C Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 AM CDT Mon Oct 19 2026 

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Issued: 1234 AM CDT Mon Oct 19 2026
Key Messages
- Temperatures will drop down into the upper 30s to low 40s tonight. Frost formation may be possible again in south- central and eastern IL. Continue to take precautions to protect sensitive vegetation with these colder temperatures and threat of frost.
- Temperatures will warm this week. Highs tomorrow in the low 70s. By Thursday, temperatures will be back well above normal with highs in the upper 70s, nearing 80, for the end of the week.
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... Issued at 129 PM CDT Sun Oct 18 202...
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