With a population of around 1,600, Atlanta sits in Illinois, United States. The city operates in the Central Time Zone.
In 2025, Atlanta recorded an average annual temperature of 53°F. The hottest temperatures reached 91°F in August; the coolest were -7°F in January. Total precipitation for the year was 29 inches, with the wettest month being April. Snowfall for the year totaled approximately 8 inches.
View current conditions and forecast for Atlanta · More cities in Illinois