Grisham, IL Weather Forecast
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Grisham Weather Forecast
| THIS AFTERNOON | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
| Mostly Cloudy | Mostly Cloudy | Mostly Sunny | Partly Cloudy | Sunny | Mostly Clear | Mostly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Hi: 69°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 80°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C |
| POP: 20% | POP: 50% | POP: 50% | POP: 70% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 128 PM CDT Sat Sep 26 2026 

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Issued: 1245 PM CDT Sat Sep 26 2026
Key Messages
- The chance of rain (30-60%) will continue through Sunday morning for portions of central Missouri, northeast Missouri, and west- central Illinois.
- A gradual warm-up is expected through early next week. Highs near 80 degrees are forecast for most locations by Tuesday.
- A widespread beneficial rainfall is expected next week. There is high confidence (90-100%) that everyone will see measurable rainfall. Much of the area has more than a 50% chance at seeing 0.50"+ of rain.
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