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Adrian, IL Weather Forecast
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Adrian Weather Forecast
| THIS AFTERNOON | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  | |  | | | | | | | | |
| Sunny | Clear | Sunny | Partly Cloudy | Sunny | Mostly Clear | Mostly Clear | Mostly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny |
| Hi: 95°FHi: 35°C | Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Hi: 89°FHi: 32°C Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 95°FHi: 35°C | Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 146 PM CDT Thu Sep 03 2026 
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Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 217 PM CDT Thu Sep 3 2026
Key Messages
- Very hot and humid weather will continue through the end of the week and into the weekend, with peak heat index values between 100-110, especially for areas along and south of Highway 30.
- Precipitation chances will remain limited for many, with best chances north of Interstate 80 through the end of the work week.
- Temperatures and humidity will trend upwards again through the middle of next week, resulting in heat indices nearing 100. A more active pattern may also take shape, leading...