Typical Weather in Bay City, MI in September
72° F Avg High
52° F Avg Low
6 Rainy Days
☀️ Temperature Summary
September is a popular time of year to visit, with an inviting climate characterized by warm temperatures. September is one of the warmer months of the year for Bay City, with highs averaging around 72°F. You can expect overnight lows near 52°F most days. Temperatures will usually fall as the month goes on, with daily high temperatures ranging between 75°F and 66°F.
September is a great time to visit Bay City, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
☔ Rain Summary
In September you can expect close to a 21% chance of rain for any given day. It rains more than usual in September, with total rainfall for the month typically near 4 inches.
Rainfall Throughout the Year
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