Weather in Grand Rapids in September
How warm is it in Grand Rapids in September?
In September the typical daytime high in Grand Rapids is 23.8 °C on average, from 26.0 °C at the start to 21.0 °C at the end of the month.
That is 3.3 °C cooler than in August and 7.2 °C warmer than in October.
The last 10 years were 1.2 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
The average of the weather stations Bowling Green Wwtp (244 km) and Green Bay (260 km); nearer ones count more.