Typical Weather

Waterloo · United States

Weather in Waterloo in September

In September the typical daytime high in Waterloo is 25.6 °C on average, from 27.9 °C at the start to 22.8 °C at the end of the month.

The last 10 years were 2.3 °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 Cedar Rapids (79 km) and Rock Is L&D (183 km); nearer ones count more.