NIU Weather

Weather and Climate at NIU

Northern Illinois University, located in DeKalb, Illinois, experiences a humid continental climate. The area has distinct seasonal variations:

• Winter (December to February): Cold with average temperatures ranging from 15°F to 30°F (-9°C to -1°C). Snowfall is common, affecting commuting and campus life.
• Spring (March to May): Temperatures rise from 30°F to 60°F (-1°C to 15°C). It's a transitional period with variable weather, including rain and occasional late snow.
• Summer (June to August): Warm to hot with temperatures between 60°F and 85°F (15°C to 29°C). Humidity can be high, impacting outdoor research and activities.
• Fall (September to November): Cooling temperatures from 60°F to 40°F (15°C to 4°C). This season is known for its vibrant foliage but can also bring early frosts.

Extreme weather conditions include thunderstorms in summer and blizzards in winter, which can disrupt campus operations and research activities.