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St. Clair Lake, MI Weather Forecast
St. Clair Lake, MI Weather Forecast Date: 222 PM EDT Wed Sep 02 2026
The area/counties/county of: Marquette, including the cities of: Gwinn and Marquette.or toggle through each period.
Late This Afternoon... Mostly sunny. North winds 5 to 10 mph.
Tonight... Clear. Lows in the mid 50s. Light north winds, becoming west after midnight.
Thursday... Sunny. Highs around 77. Northeast winds 5 to 10 mph.
Thursday Night... A chance of showers after midnight. Mostly cloudy. Lows 53 to 58. Light east winds. Chance of rain 40%.
Friday... A slight chance of showers in the morning. Partly cloudy. Highs around 75. East winds 5 to 10 mph. Chance of rain 20%.
Friday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows 54 to 59. Light east winds.
Saturday... Partly cloudy. Highs around 78.
Saturday Night... Mostly clear. Lows 56 to 61.
Sunday... A chance of showers in the morning. Partly cloudy. Highs around 78. Chance of rain 30%.
Sunday Night... Mostly cloudy with a 40% chance of showers. Lows 56 to 61.
Labor Day... Mostly cloudy with a chance of showers. Highs around 72. Chance of rain 40%.
Monday Night... Mostly cloudy with a 50% chance of showers. Lows 52 to 57.
Tuesday... Mostly cloudy with a chance of showers. Highs around 71. Lows 55 to 60. Chance of rain 50%.
Tuesday Night... Mostly cloudy with a chance of showers. Highs around 71. Lows 55 to 60. Chance of rain 50%.
POP = Probability of Precipitation
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