Ontonagon, MI Weather Forecast
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Ontonagon Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
| Showers Likely | Clearing | Clear | Sunny | Partly Cloudy | Partly Cloudy | Clear | Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Mostly Sunny |
| Lo: 45°FLo: 7°C | Hi: 60°FHi: 16°C | Lo: 35°FLo: 2°C | Hi: 60°FHi: 16°C | Lo: 37°FLo: 3°C | Hi: 73°FHi: 23°C | Hi: 66°FHi: 19°C Lo: 45°FLo: 7°C | Hi: 66°FHi: 19°C Lo: 45°FLo: 7°C | Hi: 62°FHi: 17°C Lo: 39°FLo: 4°C | Hi: 62°FHi: 17°C Lo: 39°FLo: 4°C | Lo: 36°FLo: 2°C | Hi: 63°FHi: 17°C |
| POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1153 PM EDT Sat Oct 03 2026 

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Issued: 743 PM EDT Sat Oct 3 2026
Key Messages
- A Clipper low passing through the region this weekend brings a period of light rain for most. Accumulations by Sunday morning are generally around a quarter inch for the south half and a third to a half inch for the north half.
- This Clipper will also bring gusty winds, initially out of the south tonight and then northwesterly Sunday. Chances of gales on eastern Lake Superior both ahead of and behind the Clipper are 40- 70%. The Gale Watch will be upgraded to a Gale Warning.
- Mostly dr...
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