Summer Temperature Comparison
Climate

Illinois vs Wisconsin: Summer Temperature

Illinois has hotter summers than Wisconsin.

Illinois flag
Illinois
IL • Midwest
Winner
73.4°F
Average statewide summer temperature across June, July, and August.
Wisconsin flag
Wisconsin
WI • Midwest
66.8°F
Average statewide summer temperature across June, July, and August.

Visual Comparison

Illinois 73.4°F
Wisconsin 66.8°F

Difference: 6.6°F — Illinois leads.

Related Context

Climate Breakdown

Summer heat affects electricity bills, outdoor lifestyle, and worker productivity.

Metric
Illinois
Wisconsin

What This Means

Illinois vs Wisconsin: Summer Temperature in context

Illinois has a summer temperature of 73.4°F, compared with 66.8°F in Wisconsin. Average statewide summer temperature across June, July, and August.

Illinois
73.4°F
Wisconsin
66.8°F
Difference
6.6°F

People Also Ask

Illinois vs Wisconsin Summer Temperature — Common Questions

Q What is Illinois's summer temperature?

Illinois's summer temperature is 73.4°F.

Q What is Wisconsin's summer temperature?

Wisconsin's summer temperature is 66.8°F.

Q Which state has a higher summer temperature — Illinois or Wisconsin?

Illinois has hotter summers than Wisconsin.

Sources: Core demographic data comes from the 2020 U.S. Census, with land area from U.S. Census Bureau TIGER files. Income, housing, affordability, and tax fields are maintained in our comparison dataset; purchasing-power figures use BEA Regional Price Parities. Minimum wage data comes from the U.S. Department of Labor, gas prices from AAA, and electricity rates from the U.S. Energy Information Administration. Political control and election fields use 2024 presidential results together with National Conference of State Legislatures data. Gun-law labels use the Giffords scorecard, alcohol system data comes from NABCA, and marijuana status uses NCSL's state cannabis laws tracker.