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Annawan, Illinois, United States experiences a continental climate with four distinct seasons. Winters tend to be cold and snowy with temperatures usually averaging around 0°C (32°F) from December to February. The coldest temperatures of the year can drop as low as -10°C (14°F). Snowfall averages about 60 cm (24 in) for the season.
Spring brings warmer weather with temperatures ranging from 5°C (41°F) in March to 17°C (63°F) in May. Precipitation increases as temperatures rise, with April and May averaging 55 mm (2.2 in) and 50 mm (2 in) respectively.
In the summer months of June, July, and August, temperatures reach an average of 24°C (75°F). It is usually the driest season of the year with an average of only 35 mm (1.4 in) of precipitation.
The autumn months of September to November are usually mild with temperatures ranging from 15°C (59°F) to 8°C (46°F). Rainfall averages about 50 mm (2 in) for the season.
As of 2020, the city population is 825.
This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Annawan, Illinois.