IU Weather

Weather and Climate at IU

Indiana University, located in Bloomington, experiences a humid continental climate with four distinct seasons.

• Winter (December to February): Temperatures range from 20°F to 40°F (-6°C to 4°C). Snowfall is common, averaging 20 inches per year, which can impact commuting and campus life.
• Spring (March to May): Temperatures rise from 35°F to 70°F (2°C to 21°C). This season sees increased rainfall, beneficial for the campus's lush greenery.
• Summer (June to August): Warm to hot, with temperatures between 65°F and 85°F (18°C to 29°C). High humidity can affect outdoor activities and research.
• Fall (September to November): Cooler temperatures from 70°F to 40°F (21°C to 4°C). The fall foliage is a highlight, but occasional early frosts can occur.

Extreme weather conditions like thunderstorms and occasional tornadoes can affect campus operations and safety protocols.