With a population of around 1,600, Mount Carroll sits in Illinois, United States. The city operates in the Central Time Zone.
Recent weather here gives a sense of typical conditions: in 2025, Mount Carroll recorded a mean annual temperature of 50°F, ranging from -12°F lows in February to 93°F highs in June, with about 33 inches of precipitation across the year.
View historical weather for Mount Carroll · More cities in Illinois