Grassy Lake, IN Weather Forecast
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Grassy Lake Weather Forecast
| REST OF TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
| Clear | Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Clearing | Chance of T-Storm |
| Lo: 55°FLo: 13°C | Hi: 80°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 71°FLo: 22°C | Hi: 89°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 89°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 89°FHi: 32°C |
| POP: 20% | POP: 20% | POP: 20% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1243 AM EDT Fri Aug 28 2026 

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Instant definitions for any meteorological term.
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Issued: 130 AM EDT Fri Aug 28 2026
Key Messages
- Seasonable temperatures continue through Saturday, but then warming and more humid conditions return early next week.
- Low chance of showers and thunderstorms return late weekend/early next week but confidence is low.
Discussion
... Issued at 123 PM EDT Thu Aug 27 2026
A rogue shower remains possible through sunset as one more weak wave passes through the area and interacts with limited instability (less than 1000 J/KG MUCAPE) and little overall shear.
Otherwise, an extended dry period is...
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