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St. Peter, MI Weather Forecast
St. Peter, MI Weather Forecast Date: 212 PM EDT Tue Sep 22 2026
The area/counties/county of: Ionia, including the city of Ionia.or toggle through each period.
Through Early Evening... Partly sunny. Highs in the mid 60s. Northeast winds around 15 mph with gusts to around 25 mph.
Tonight... Partly cloudy. Lows in the upper 40s. Northeast winds 10 to 15 mph with gusts to around 25 mph.
Wednesday... Mostly sunny. Highs in the mid 60s. East winds 10 to 15 mph with gusts to around 30 mph.
Wednesday Night... Mostly clear. Lows in the mid 40s. East winds 5 to 15 mph with gusts to around 25 mph.
Thursday... Sunny. Highs in the upper 60s. East winds 5 to 10 mph with gusts to around 20 mph.
Thursday Night... Partly cloudy. Lows in the mid 40s. East winds 5 to 10 mph in the evening becoming light.
Friday... Sunny. Highs in the mid 60s.
Friday Night... Mostly clear. Lows in the lower 40s.
Saturday... Sunny. Highs in the upper 60s.
Saturday Night... Partly cloudy. Lows in the lower 40s.
Sunday... Partly sunny in the morning then becoming mostly sunny. Highs in the upper 60s.
Sunday Night... Partly cloudy. Lows in the mid 40s.
Monday... Mostly sunny. Highs around 70.
Monday Night... Partly cloudy. Lows in the upper 40s.
POP = Probability of Precipitation
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