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Grant Lake Weather Forecast
| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  |  |  | |  | | | | | | |
| Sunny | Mostly Clear | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Clearing | Sunny | Partly Cloudy |
| Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C |
| POP: 20% | POP: 70% | POP: 50% | POP: 70% | POP: 20% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 128 PM CDT Wed Sep 09 2026 
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Issued: 139 PM CDT Wed Sep 9 2026
Key Messages
Issued at 136 PM CDT WED SEP 9 2026- Persistent Heat: Afternoon high temperatures will continue to reach the low to mid-90s for much of the next week, keeping Heat Index values above 100 degrees. Take extra precautions with any extended afternoon outdoor activities.
Discussion
... (This afternoon through Tuesday) Issued at 136 PM CDT WED SEP 9 2026
Upper-level ridging will slowly degrade over the next 24- 48 hours, as a trough and cold front begin to move through the Midwest. This cold f...