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Sister Lakes, MI Weather Forecast
Sister Lakes, MI Weather Forecast Date: 222 PM EDT Tue Sep 01 2026
The area/counties/county of: Isabella, including the city of Mount Pleasant.or toggle through each period.
Through Early Evening... Mostly sunny with a 30% chance of showers. Highs in the lower 90s. Southwest winds 5 to 10 mph with gusts to around 20 mph. Heat index readings 93 to 98.
Tonight... Partly cloudy with a chance of showers and a slight chance of thunderstorms in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the upper 60s. Southwest winds 5 to 10 mph with gusts to around 20 mph in the evening becoming light. Chance of rain 50%.
Wednesday... Partly sunny with a 50% chance of showers and thunderstorms. Highs around 90. Light winds becoming southwest 5 to 15 mph with gusts to around 25 mph in the afternoon. Heat index readings 91 to 96.
Wednesday Night... Showers likely and a chance of thunderstorms in the evening, then a chance of showers after midnight. Lows in the mid 60s. West winds around 10 mph with gusts to around 25 mph in the evening becoming light. Chance of rain 60%.
Thursday... Mostly cloudy. A chance of showers in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Light winds. Chance of rain 50%.
Thursday Night... A chance of showers and thunderstorms in the evening, then showers likely and a slight chance of thunderstorms after midnight. Lows in the lower 60s. Light winds. Chance of rain 60%.
Friday... Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Highs in the lower 80s. Chance of rain 50%.
Friday Night... Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower 60s. Chance of rain 40%.
Saturday... Partly sunny in the morning then becoming mostly sunny. Highs around 80.
Saturday Night... Partly cloudy with a 20% chance of rain showers. Lows in the upper 50s.
Sunday... Mostly sunny in the morning then becoming partly sunny. A 20% chance of rain showers. Highs around 80.
Sunday Night... Partly cloudy. Lows in the upper 50s.
Labor Day... Mostly sunny in the morning then becoming partly sunny. Highs in the upper 70s.
Monday Night... Partly cloudy with a 20% chance of rain showers. Lows in the mid 50s.
POP = Probability of Precipitation
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