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Dundas Weather Forecast
| REST OF TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | |  | | | | | | |  | |
| Mostly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Partly Cloudy | Sunny | Partly Cloudy | Chance of Showers | Partly Cloudy |
| Hi: 90°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 99°FHi: 37°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 69°FLo: 21°C | Hi: 90°FHi: 32°C | Hi: 85°FHi: 29°C Lo: 65°FLo: 18°C |
| POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 757 AM CDT Sun Sep 13 2026 
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Issued: 542 AM CDT Sun Sep 13 2026
Key Messages
- A sharp temperatures gradient is expected across central Illinois today; highs range from the 70s northwest of I-55 to near 90 south of I-70.
- Isolated showers are possible this afternoon and evening, primarily west of I-55, with localized rainfall around 0.10 inches.
- An unsettled pattern arrives Tuesday into Wednesday with widespread showers, thunderstorms, heavy rainfall potential, and a 5-15% chance for severe weather.
Discussion
... Issued at 216 AM CDT Sun Sep 13 2026
Today and Toni...