Augusta, IL Weather Forecast
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Augusta Weather Forecast
| REST OF TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | FRIDAY | FRIDAY NIGHT | SATURDAY |
| Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Sunny |
| Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 69°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C Lo: 55°FLo: 13°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C |
| POP: 50% | POP: 50% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 931 AM CDT Sun Sep 20 2026 

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Issued: 1210 PM CDT Sun Sep 20 2026
Key Messages
- The widespread heavy rains are over, though a small upper low will continue to spin near our local area with showers, weak thunderstorms and most certainly cool cloudy conditions. through Tuesday morning.
- Expectations for several beautiful early Fall days are growing for mid week, with highs in the 60s and lows in the 40s-50s.
Aviation
/18Z TAFS THROUGH 18Z MONDAY/... Issued at 1207 PM CDT Sun Sep 20 2026
Persistent MVFR cigs will continue as an upper low and surface low remain nearby t...
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