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The highest elevation is near the Ohio border, at about 1,250 feet (380 metres) above sea level, while the lowest point, at roughly 330 feet (100 metres), is in the southwest where the Wabash River enters the Ohio River.
About 90 percent of the land lies between 500 and 1,000 feet (150 and 300 metres).
In January, daily temperatures in Jeffersonville, on the Ohio River in the south, usually rise from the low 20s F (about –6 °C) into the low 40s F (about 4 °C), while in South Bend, near Lake Michigan in the north, temperatures typically range from the mid-10s F (about −9 °C) to the low 30s F (about −1 °C).
In July, temperatures in both the north and the south normally drop into the mid-60s F (about 17 °C) and rise into the mid- to upper 80s F (28–32 °C) daily.
The cities near the state’s northwestern corner form an industrial, economic, and social continuum with neighbouring Chicago.
Their significant African American and Hispanic populations and the political aspirations contrast strikingly with life in the smaller cities and towns near the state’s southern boundary.
Its northern areas lie in the mainstream of the industrial belt that extends from Pennsylvania and New York to Illinois.
Spring, with its generally erratic and unstable weather, is the season with the greatest number of tornadoes.Most of Indiana’s forests are secondary growth and contain a wide spectrum of trees, including various types of hickories, sycamores, maples, and oaks, which together offer a spectacular display of color in fall.Flowering trees, such as tulip trees (; also called yellow poplars) and dogwoods, illuminate the forests in spring.Annual precipitation varies from about 45 inches (1,150 mm) in the south-central region to about 37 inches (940 mm) in the north.Snow may fall over a six-month period and averages more than 20 inches (510 mm) annually, with the cities along the northern border often reporting more than 100 inches (2,540 mm).