Ontonagon, MI 7-Day Night Weather Forecast
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Ontonagon, MI Weather Forecast


Ontonagon, MI Weather Forecast Date: 907 PM EDT Wed Sep 23 2026
The area/counties/county of: Ontonagon, including the city of Ontonagon.or toggle through each period.
Rest of Tonight... Mostly clear. Patchy fog. Lows in the lower 40s. South winds 5 to 10 mph.
Thursday... Partly cloudy in the morning, then becoming cloudy. Highs around 69. South winds 5 to 10 mph.
Thursday Night... Mostly cloudy. Lows 47 to 52. Light south winds.
Friday... Mostly sunny. Highs around 74 inland to around 67 at The shore. Light south winds.
Friday Night... Mostly clear. Lows 46 to 51. Light south winds.
Saturday... Partly cloudy. Highs 70 to 75.
Saturday Night... Mostly cloudy. Lows 48 to 53. Highs 66 to 71.
Sunday... Mostly cloudy. Lows 48 to 53. Highs 66 to 71.
Monday... Partly cloudy. Highs around 74 inland to around 68 at The shore.
Monday Night... A chance of showers after midnight. Mostly cloudy. Lows around 54. Chance of rain 30%.
Tuesday... A chance of showers in the morning, then showers likely in the afternoon. Mostly cloudy. Highs 68 to 73. Chance of rain 60%.
Tuesday Night... Showers likely in the evening, then a chance of showers after midnight. Cloudy. Lows around 50. Chance of rain 60%.
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