DeWitt County, Illinois: History
== Geography ==
According to the U.S. Census Bureau, the county has a total area of 405 square miles (1,050 km2), of which 398 square miles (1,030 km2) is land and 7.6 square miles (20 km2) (1.9%) is water.
In recent years, average temperatures in the county seat of Clinton have ranged from a low of 17 °F (−8 °C) in January to a high of 88 °F (31 °C) in July, although a record low of −25 °F (−32 °C) was recorded in February 1905 and a record high of 113 °F (45 °C) was recorded in July 1954. Average monthly precipitation ranged from 1.95 inches (50 mm) in February to 4.54 inches (115 mm) in July.
McLean County - north
Piatt County - east
Macon County - south
Logan County - west
SHOW Bus
I-74
US 51
US 150
IL 10
IL 48
IL 54 – former US 54