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Bismarck, IL Weather Forecast
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Bismarck Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Clearing | Sunny | Partly Cloudy | Chance of Showers | Chance of Showers | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of Showers |
| Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C Lo: 69°FLo: 21°C | Hi: 90°FHi: 32°C | Hi: 85°FHi: 29°C Lo: 69°FLo: 21°C |
| POP: 40% | POP: 50% | POP: 50% | POP: 30% | POP: 30% | POP: 30% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 637 AM CDT Wed Sep 09 2026 
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Issued: 557 AM CDT Wed Sep 9 2026
Key Messages
- Heat indices will top out around 100 degrees this afternoon south of I-72 due to high temperatures in the 90s and rising humidity levels.
- Scattered thunderstorms this morning and afternoon, becoming more widespread late tonight along a stalled front; localized heavy rainfall of 1 to 3 inches could cause localized flooding, particularly south of I-70. There is a marginal risk (level 1 of 5) for severe thunderstorms near/south of 1- 72.
Discussion
... Issued at 205 AM CDT Wed Sep 9 2026
M...