Waterloo · United States
Weather in Waterloo in December
In December the typical daytime high in Waterloo is 1.9 °C on average, from 4.6 °C at the start to -0.1 °C at the end of the month.
The last 10 years were 2.1 °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.