| NWS Forecast for: Ontonagon County Issued by: National Weather Service Marquette, MI Last Update: 432 AM EDT Mon Aug 17 2026 | |
| Early This Morning: Clear. Patchy fog. Light southwest winds. Today: Patchy fog in the morning. Sunny. Highs in the upper 70s. West winds 5 to 10 mph. Tonight: Partly cloudy with a slight chance of thunderstorms. A chance of showers in the evening, then a slight chance of showers after midnight. Lows 56 to 61. Light southwest winds, becoming west 5 to 10 mph after midnight. Chance of rain 50 percent. Tuesday: Mostly cloudy with a slight chance of showers in the morning, then mostly sunny in the afternoon. Highs around 73. Northwest winds 5 to 10 mph. Chance of rain 20 percent. Tuesday Night And Wednesday: Clear. Lows 46 to 51 inland to around 56 at the shore. Highs around 74. Northwest winds 5 to 10 mph. Wednesday Night And Thursday: Clear. Lows 44 to 49 inland to around 53 at the shore. Highs around 79. Thursday Night: Partly cloudy with a 30 percent chance of showers. Lows around 56 inland to around 62 at the shore. Friday: A chance of showers in the afternoon. Mostly cloudy. Highs around 81. Chance of rain 50 percent. Friday Night: A chance of showers in the evening. Partly cloudy. Lows around 54 inland to around 60 at the shore. Chance of rain 30 percent. Saturday Through Sunday: Mostly clear. Highs around 75. Lows 47 to 52 inland to around 57 at the shore. | |
| Zone Forecast: Ontonagon County | |
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