Weather Forecast and Radar for Waterloo, Illinois

Weather in Waterloo, IL

Waterloo, Illinois is located in the Midwest of the United States and experiences a humid continental climate throughout the year. Summers in Waterloo are typically hot and humid with temperatures reaching highs in the mid-80s Fahrenheit (27-29 Celsius) during the day and lows in the mid-60s Fahrenheit (18-20 Celsius) at night. Temperatures often exceed 90 degrees Fahrenheit (32 Celsius) during the summer months. Winters are cold and snowy with temperatures averaging highs in the mid-30s Fahrenheit (2-3 Celsius) and lows in the teens (minus 7 to minus 10 Celsius). The coldest months are usually January and February. Spring and fall offer pleasant weather with temperatures ranging from the mid-40s Fahrenheit (7-8 Celsius) to the mid-60s Fahrenheit (18-20 Celsius). The area receives an average of 40 inches (102 centimeters) of rain throughout the year.

Fast Facts About Waterloo, IL

As of 2020, the city population is 10417.

Major Cities Nearby Waterloo, IL

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Waterloo, Illinois.