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Average Temperature in Chicago. The warm season lasts for 3.6 months, from June 2 to September 19, with an average daily high temperature above 73°F. The hottest month of the year in Chicago is July, with an average high of 82°F and low of 70°F.
The average high and low temperatures are listed below by month and annually for Chicago, in both degrees Fahrenheit and Celsius. Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.
The average temperature is of 22.2 °C (72 °F), with a minimum of 17.1 °C (62.8 °F) and a maximum of 27.3 °C (81.1 °F). On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 9.5 °C (49.5 °F). However, it dropped to 3.9 °C (39 °F) in June 2003.
Annual high temperature: 57ºF: Annual low temperature: 42ºF: Days per year with precip. 120 days: Annual hours of sunshine: 2611 hours: Average annual precip. 33.2 inch
The average water temperature during the year located in Chicago (Lake Michigan) at 11.60°C | 52.88°F. At about 26.20°C | 79.16°F is the maximum of the water temperatures over the months. This will be reached in July.
Radar. Forecasts. Rivers and Lakes. Climate and Past Weather. Local Programs. Daily, Monthly, and Annual Climate Normals for Chicago, IL. This page houses the latest 30-year climate normals (1991-2020) for Chicago. JAN. FEB. MAR. APR. MAY. JUN. JUL. AUG. SEP. OCT. NOV. DEC. Monthly/Annual. January:
Weather.com brings you the most accurate monthly weather forecast for Chicago, IL with average/record and high/low temperatures, precipitation and more.
