Indiana is a U.S. state in the Midwestern United States. It is the 38th-largest by area and the 17th-most populous of the 50 United States. Its capital and largest city is Indianapolis. Indiana was admitted to the United States as the 19th state on December 11, 1816.

It is bordered by Lake Michigan to the northwest, Michigan to the north, Ohio to the east, the Ohio River and Kentucky to the south and southeast, and the Wabash River and Illinois to the west.

Various indigenous peoples inhabited Indiana for thousands of years, some of whom the U.S. government expelled between 1800 and 1836. Indiana received its name because the state was largely possessed by native tribes even after it was granted statehood.

Since then, settlement patterns in Indiana have reflected regional cultural segmentation present in the Eastern United States; the state’s northernmost tier was settled primarily by people from New England and New York, Central Indiana by migrants from the Mid-Atlantic states and adjacent Ohio, and Southern Indiana by settlers from the Upland South, particularly Kentucky and Tennessee.

Indiana has a diverse economy with a gross state product of $377.1 billion in 2019. It has several metropolitan areas with populations greater than 100,000 and several smaller cities and towns. Indiana is home to professional sports teams, including the NFL’s Indianapolis Colts and the NBA’s Indiana Pacers, and hosts several notable competitive events, including the Indianapolis 500.

CLIMATE

In the past, almost all of Indiana had a humid continental climate (Dfb), with cold winters and hot, wet summers only the extreme southern portion of the state lay within the humid subtropical climate (Cfb), which receives more precipitation than other parts of Indiana. But as of the 2016 update, about half the state is now classified as humid subtropical. Temperatures generally diverge from the north and south sections of the state. In midwinter, average high/low temperatures range from around 30 °F/15 °F (−1 °C/−10 °C) in the far north to 41 °F/24 °F (5 °C/−4 °C) in the far south.

In midsummer there is generally a little less variation across the state, as average high/low temperatures range from around 84 °F/64 °F (29 °C/18 °C) in the far north to 90 °F/69 °F (32 °C/21 °C) in the far south. Indiana’s record high temperature was 116 °F (47 °C) set on July 14, 1936, at Collegeville. The record low was −36 °F (−38 °C) on January 19, 1994, at New Whiteland. The growing season typically spans from 155 days in the north to 185 days in the south.

While droughts occasionally occur in the state, rainfall totals are distributed relatively equally throughout the year. Precipitation totals range from 35 inches (89 cm) near Lake Michigan in northwest Indiana to 45 inches (110 cm) along the Ohio River in the south, while the state’s average is 40 inches (100 cm).

Annual snowfall in Indiana varies widely across the state, ranging from 80 inches (200 cm) in the northwest along Lake Michigan to 14 inches (36 cm) in the far south. Lake effect snow accounts for roughly half the snowfall in northwest and north central Indiana because of the moisture and relative warmth of Lake Michigan upwind. The mean wind speed is 8 miles per hour (13 km/h).

In a 2012 report, Indiana was ranked eighth in a list of the top 20 tornado-prone states based on National Weather Service data from 1950 through 2011. A 2011 report ranked South Bend 15th among the top 20 tornado-prone U.S. cities, while another report from 2011 ranked Indianapolis eighth. Despite its vulnerability, Indiana is not part of tornado alley.