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Andover, Illinois, located in the Midwest region of the United States, experiences a wide range of weather conditions year-round. During the summer months (June-August), average temperatures range from 19°C to 27°C, with high humidity and frequent thunderstorms. Winter (December-February) temperatures average around -2°C, with occasional snowfall. Spring and fall (March-May and September-November) temperatures are mild, averaging between 8°C and 18°C. Rainfall is common throughout the year, with an average of 97 cm annually.
As of 2020, the city population is 460.
This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Andover, Illinois.