Weather Forecast and Radar for Oswego, Illinois

Weather in Oswego, IL

Oswego, Illinois, United States experiences all four seasons throughout the year. In the winter months of December, January, and February, temperatures range from the high 20s to low 30s Fahrenheit. Snowfall is common during these months, and temperatures may dip well below freezing at night. During the spring months of March, April, and May, temperatures range from the mid-40s to mid-60s Fahrenheit. Rainfall is expected during this time, and the occasional thunderstorm can be seen. Summer months of June, July, and August bring temperatures in the upper 70s to low 80s Fahrenheit. Humidity can be high during these months, and thunderstorms with occasional hail are common. Fall months of September, October, and November bring temperatures in the mid-50s to mid-70s Fahrenheit. Rainfall is expected during this time, and there may be some light snowfall in November.

Fast Facts About Oswego, IL

As of 2020, the city population is 35470.

Major Cities Nearby Oswego, IL

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