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Climate of Chicago
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The climate of Chicago is classified as hot-summer humid continental (Köppen: Dfa) with hot humid summers and cold, occasionally snowy winters. All four seasons are distinctly represented: Winters are cold and often see snow with below 0 Celsius temperatures and windchills, while summers are warm and humid with temperatures being hotter inland, spring and fall bring bouts of both cool and warm weather and fairly sunny skies. Annual precipitation in Chicago is moderate and relatively evenly distributed, the driest months being January[1] and February[2] and the wettest July[3] and August.[4] Chicago's weather is influenced during all four seasons by the nearby presence of Lake Michigan.[5][6]
- ^ "Precipitation Rankings for January for Chicago, IL". NWS Chicago. Retrieved December 3, 2019.
- ^ "February Precipitation Rankings for Chicago, IL". NWS Chicago. Retrieved December 3, 2019.
- ^ "July Precipitation Amounts for Chicago, IL". NWS Chicago. Retrieved December 3, 2019.
- ^ "August Precipitation Amounts for Chicago, IL". NWS Chicago. Retrieved December 3, 2019.
- ^ "How does Chicago's proximity to Lake Michigan affect our weather?". December 13, 2025.
- ^ "Climate of Chicago - Description, Illinois State Climatologist Office, Illinois State Water Survey, U of I". www.isws.illinois.edu. Retrieved January 13, 2025.
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