However, every three years or so during the winter Chicago experiences a heavier snowstorm that can produce over 10 in (25 cm) of snow over a 1- to 3-day period, a level of snowfall very often seen in cities on the ' snowbelt' on other side of the lake such as Grand Rapids, Michigan, Kalamazoo, Michigan, and South Bend, Indiana. Cities on the other side of Lake Michigan usually receive more snow than Chicago because of the lake-effect snow that falls on these communities, even though northeasterly winds can sometimes bring lake-effect snow to Chicago area too. Most winters produce many snow falls during the season in light accumulations of around 2 in (5.1 cm). Seasonal snowfall in the city has ranged from 9.8 inches (24.9 cm) (in 1920–21) up to 89.7 in (228 cm) (in 1978–79), and the average annual snowfall in Chicago is 36 inches (91 cm). The city typically sees less snow in winter than other major cities near the Great Lakes, such as Cleveland or Buffalo, but more snow than that experienced on the East Coast in cities like Washington DC or New York City. Winter in Chicago is generally cold and snowy. Source: NOAA (relative humidity, dew point and sun 1961–1990) Note: Some of the addresses prior to 1909 are different from the post-1909 addresses Classifications Chicago Climate according to major climate systemsĬlimate data for Chicago (Midway Airport), 1991–2020 normals, extremes 1928–presentĬlimate data for Chicago (O'Hare Int'l Airport), 1991–2020 normals, extremes 1871–present Here is a list of official weather observation locations for the Chicago office: DatesĪll records lost due to Great Chicago Fire Weather data from Midway Airport before July 1, 1942, and after January 16, 1980, and data from O'Hare Airport before January 17, 1980, are not part of the official climate record of Chicago. Both sites have served in the past as the official observation location, the latter being the current official station. Of the two major airports located in Chicago, Midway Airport began observations in 1928, and O'Hare Airport began them in 1958.

The National Weather Service office in Chicago has one of the longest periods of official weather records, dating back to 1870, though all the 18 weather records taken at 181 West Washington Street were lost in the Great Chicago Fire. Chicago's weather is influenced during all four seasons by the nearby presence of Lake Michigan. Annual precipitation in Chicago is moderate and relatively evenly distributed, the driest months being January and February and the wettest July and August. 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. Thank you for listening to the weather report from LocalConditions.The climate of Chicago is classified as hot-summer humid continental ( Köppen: Dfa). Tuesday has an expected forecast of A 20 percent chance of showers and thunderstorms before 1pm. Sunny, with a steady temperature around 72. The forecast for This Afternoon is Widespread haze. Sunrise is at 5:15 AM and Sunset is at 8:20 PM. Wind direction is NorthEast at 9 miles per hour, gusting at 15 mph. The humidity is 26.56 percent with a dew point of 44.6 degrees fahrenheit that is rising since the last report.

The barometric pressure is 30.03 - measured by inch of mercury units - and is steady since its last observation. It is 82 degrees fahrenheit, or 28 degrees celsius and feels like 82 degrees fahrenheit. The current weather report for Chicago IL, as of 3:45 PM CDT, has a sky condition of Partly Cloudy with the visibility of 10.00 miles.

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