With a population of around 3,000, Green Rock sits in Illinois, United States. The city operates in the Central Time Zone.
Green Rock has a humid continental climate. Average annual temperature is 50°F, with January lows around 14°F and July highs near 84°F. The city averages 36 inches of precipitation per year. The wettest month is typically May; the driest is January.
View historical weather for Green Rock · More cities in Illinois