Climate of Chicago
Official locations

Climate of Chicago

Section Title: Official locations
Table Section Text: None

Dates	Location	Remarks

October 15, 1870 – October 8, 1871	181 W. Washington St.	All records lost due to Great Chicago Fire

October 15, 1871 – June 11, 1872	427 W. Randolph St.

June 11, 1872 – June 8, 1873	20 N. Wacker Dr.

June 8, 1873 – January 1, 1887	Roanoke Building

January 1, 1887 – February 1, 1890	Chicago Opera House

February 1, 1890 – July 1, 1905	Auditorium Tower	Automatic rain gauge installed in 1897

July 1, 1905 – December 31, 1925	U.S. Court House	Supplemental observations through 1970

January 1, 1926 – June 30, 1942	University of Chicago	Supplemental observations through 1962

July 1, 1942 – January 16, 1980	Midway Airport	Continues to provide observations

January 17, 1980 – present	O'Hare Airport

Sentence(s)