Simpson Lake, MI Weather Forecast
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Simpson Lake Weather Forecast
| TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
| Chance of Showers | Clear | Mostly Sunny | Partly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers |
| Hi: 79°FHi: 26°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 60°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C |
| POP: 20% | POP: 50% | POP: 80% | POP: 30% | POP: 50% | POP: 60% | POP: 40% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 323 AM EDT Sun Sep 13 2026 

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Issued: 431 AM EDT Sun Sep 13 2026
Key Messages
- Potential for a few showers to develop this afternoon.
- A cooler air mass settles over the area tonight through Monday night. Tonight will feature to coolest night, with overnight lows falling into the 40s.
- Unsettled weather returns Tuesday and lingers into late week. Tuesday will feature a warmer more humid day helping to set the stage for thundestorms chances as a slow moving front arrives.
Discussion
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A cold front continues to drop south across the area early this morning. This wil...
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