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Pettys Lake, MI Weather Forecast
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Pettys Lake Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  | | | | | | | | | | |
| Clear | Sunny | Clear | Sunny | Mostly Clear | Sunny | Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny |
| Lo: 35°FLo: 2°C | Hi: 60°FHi: 16°C | Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 355 PM EDT Sat Oct 17 2026 
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Issued: 1155 PM EDT Sat Oct 17 2026
Key Messages
- A Frost Advisory is in effect late tonight for the area generally south and east of a line from Howell to Sandusky. This extends to the Ohio border outside of metro Detroit.
- A warming trend begins Sunday and continues along with dry weather throughout the week.
Aviation
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Deep H5 to H3 ridging will build directly through the central Great Lakes tonight. Midlevel flow trajectories will remain anticyclonic throughout the period with deep subsidence between 3.0 and 15.0 kft agl. Expectat...